diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 9a2c4db..033f8c8 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6354,7 +6354,7 @@ static uint32 GetPatchVariable(uint8 param)
 		 */
 		case 0x13: {
 			byte map_bits = 0;
-			byte log_X = MapLogX() - 6; // substraction is required to make the minimal size (64) zero based
+			byte log_X = MapLogX() - 6; // subtraction is required to make the minimal size (64) zero based
 			byte log_Y = MapLogY() - 6;
 			byte max_edge = max(log_X, log_Y);
 
diff --git a/src/newgrf.h b/src/newgrf.h
index 70fa6ce..9058aea 100644
--- a/src/newgrf.h
+++ b/src/newgrf.h
@@ -167,7 +167,7 @@ struct GRFLoadedFeatures {
 };
 
 /**
- * Check for grf miscelaneous bits
+ * Check for grf miscellaneous bits
  * @param bit The bit to check.
  * @return Whether the bit is set.
  */
diff --git a/src/newgrf_airport.h b/src/newgrf_airport.h
index a981bea..e9cf765 100644
--- a/src/newgrf_airport.h
+++ b/src/newgrf_airport.h
@@ -114,7 +114,7 @@ struct AirportSpec {
 	TTDPAirportType ttd_airport_type;      ///< ttdpatch airport type (Small/Large/Helipad/Oilrig)
 	AirportClassID cls_id;                 ///< the class to which this airport type belongs
 	SpriteID preview_sprite;               ///< preview sprite for this airport
-	uint16 maintenance_cost;               ///< maintenance cost mulltiplier
+	uint16 maintenance_cost;               ///< maintenance cost multiplier
 	/* Newgrf data */
 	bool enabled;                          ///< Entity still available (by default true). Newgrf can disable it, though.
 	struct GRFFileProps grf_prop;          ///< Properties related to the grf file.
diff --git a/src/newgrf_airporttiles.cpp b/src/newgrf_airporttiles.cpp
index 9829286..7877360 100644
--- a/src/newgrf_airporttiles.cpp
+++ b/src/newgrf_airporttiles.cpp
@@ -133,11 +133,11 @@ static uint32 GetAirportTileIDAtOffset(TileIndex tile, const Station *st, uint32
 	const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
 
 	if (gfx < NEW_AIRPORTTILE_OFFSET) { // Does it belongs to an old type?
-		/* It is an old tile.  We have to see if it's been overriden */
+		/* It is an old tile.  We have to see if it's been overridden */
 		if (ats->grf_prop.override == INVALID_AIRPORTTILE) { // has it been overridden?
 			return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
 		}
-		/* Overriden */
+		/* Overridden */
 		const AirportTileSpec *tile_ovr = AirportTileSpec::Get(ats->grf_prop.override);
 
 		if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
diff --git a/src/newgrf_airporttiles.h b/src/newgrf_airporttiles.h
index 7fe5725..6c68682 100644
--- a/src/newgrf_airporttiles.h
+++ b/src/newgrf_airporttiles.h
@@ -47,7 +47,7 @@ struct AirportTileResolverObject : public ResolverObject {
 };
 
 /**
- * Defines the data structure of each indivudual tile of an airport.
+ * Defines the data structure of each individual tile of an airport.
  */
 struct AirportTileSpec {
 	AnimationInfo animation;              ///< Information about the animation.
diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
index cb78267..679642f 100644
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@@ -95,7 +95,7 @@ void OverrideManagerBase::ResetOverride()
 
 /**
  * Return the ID (if ever available) of a previously inserted entity.
- * @param grf_local_id ID of this enity withing the grfID
+ * @param grf_local_id ID of this entity within the grfID
  * @param grfid ID of the grf file
  * @return the ID of the candidate, of the Invalid flag item ID
  */
@@ -170,7 +170,7 @@ uint16 OverrideManagerBase::GetSubstituteID(uint16 entity_id) const
 
 /**
  * Install the specs into the HouseSpecs array
- * It will find itself the proper slot onwhich it will go
+ * It will find itself the proper slot on which it will go
  * @param hs HouseSpec read from the grf file, ready for inclusion
  */
 void HouseOverrideManager::SetEntitySpec(const HouseSpec *hs)
@@ -198,7 +198,7 @@ void HouseOverrideManager::SetEntitySpec(const HouseSpec *hs)
 
 /**
  * Return the ID (if ever available) of a previously inserted entity.
- * @param grf_local_id ID of this enity withing the grfID
+ * @param grf_local_id ID of this entity within the grfID
  * @param grfid ID of the grf file
  * @return the ID of the candidate, of the Invalid flag item ID
  */
@@ -226,7 +226,7 @@ uint16 IndustryOverrideManager::AddEntityID(byte grf_local_id, uint32 grfid, byt
 {
 	/* This entity hasn't been defined before, so give it an ID now. */
 	for (uint16 id = 0; id < max_new_entities; id++) {
-		/* Skip overriden industries */
+		/* Skip overridden industries */
 		if (id < max_offset && entity_overrides[id] != invalid_ID) continue;
 
 		/* Get the real live industry */
@@ -234,7 +234,7 @@ uint16 IndustryOverrideManager::AddEntityID(byte grf_local_id, uint32 grfid, byt
 
 		/* This industry must be one that is not available(enabled), mostly because of climate.
 		 * And it must not already be used by a grf (grffile == NULL).
-		 * So reseve this slot here, as it is the chosen one */
+		 * So reserve this slot here, as it is the chosen one */
 		if (!inds->enabled && inds->grf_prop.grffile == NULL) {
 			EntityIDMapping *map = &mapping_ID[id];
 
@@ -252,8 +252,8 @@ uint16 IndustryOverrideManager::AddEntityID(byte grf_local_id, uint32 grfid, byt
 }
 
 /**
- * Method to install the new indistry data in its proper slot
- * The slot assigment is internal of this method, since it requires
+ * Method to install the new industry data in its proper slot
+ * The slot assignment is internal of this method, since it requires
  * checking what is available
  * @param inds Industryspec that comes from the grf decoding process
  */
@@ -264,11 +264,11 @@ void IndustryOverrideManager::SetEntitySpec(IndustrySpec *inds)
 
 	if (ind_id == invalid_ID) {
 		/* Not found.
-		 * Or it has already been overriden, so you've lost your place old boy.
+		 * Or it has already been overridden, so you've lost your place old boy.
 		 * Or it is a simple substitute.
 		 * We need to find a free available slot */
 		ind_id = this->AddEntityID(inds->grf_prop.local_id, inds->grf_prop.grffile->grfid, inds->grf_prop.subst_id);
-		inds->grf_prop.override = invalid_ID;  // make sure it will not be detected as overriden
+		inds->grf_prop.override = invalid_ID;  // make sure it will not be detected as overridden
 	}
 
 	if (ind_id == invalid_ID) {
@@ -308,7 +308,7 @@ void IndustryTileOverrideManager::SetEntitySpec(const IndustryTileSpec *its)
 
 /**
  * Method to install the new object data in its proper slot
- * The slot assigment is internal of this method, since it requires
+ * The slot assignment is internal of this method, since it requires
  * checking what is available
  * @param spec ObjectSpec that comes from the grf decoding process
  */
@@ -319,7 +319,7 @@ void ObjectOverrideManager::SetEntitySpec(ObjectSpec *spec)
 
 	if (type == invalid_ID) {
 		/* Not found.
-		 * Or it has already been overriden, so you've lost your place old boy.
+		 * Or it has already been overridden, so you've lost your place old boy.
 		 * Or it is a simple substitute.
 		 * We need to find a free available slot */
 		type = this->AddEntityID(spec->grf_prop.local_id, spec->grf_prop.grffile->grfid, OBJECT_TRANSMITTER);
diff --git a/src/newgrf_commons.h b/src/newgrf_commons.h
index b352d11..de4d292 100644
--- a/src/newgrf_commons.h
+++ b/src/newgrf_commons.h
@@ -199,7 +199,7 @@ protected:
 	uint16 max_offset;       ///< what is the length of the original entity's array of specs
 	uint16 max_new_entities; ///< what is the amount of entities, old and new summed
 
-	uint16 invalid_ID;       ///< ID used to dected invalid entities;
+	uint16 invalid_ID;       ///< ID used to detected invalid entities;
 	virtual bool CheckValidNewID(uint16 testid) { return true; }
 
 public:
diff --git a/src/newgrf_config.h b/src/newgrf_config.h
index 52818c8..ed35c14 100644
--- a/src/newgrf_config.h
+++ b/src/newgrf_config.h
@@ -51,7 +51,7 @@ enum GRFBugs {
 /** Status of post-gameload GRF compatibility check */
 enum GRFListCompatibility {
 	GLC_ALL_GOOD,   ///< All GRF needed by game are present
-	GLC_COMPATIBLE, ///< Compatible (eg. the same ID, but different chacksum) GRF found in at least one case
+	GLC_COMPATIBLE, ///< Compatible (eg. the same ID, but different checksum) GRF found in at least one case
 	GLC_NOT_FOUND,  ///< At least one GRF couldn't be found (higher priority than GLC_COMPATIBLE)
 };
 
diff --git a/src/newgrf_debug_gui.cpp b/src/newgrf_debug_gui.cpp
index 244d2c0..b960011 100644
--- a/src/newgrf_debug_gui.cpp
+++ b/src/newgrf_debug_gui.cpp
@@ -68,7 +68,7 @@ static inline uint GetInspectWindowNumber(GrfSpecFeature feature, uint index)
 
 /**
  * The type of a property to show. This is used to
- * provide an appropriate represenation in the GUI.
+ * provide an appropriate representation in the GUI.
  */
 enum NIType {
 	NIT_INT,   ///< The property is a simple integer
@@ -278,7 +278,7 @@ struct NewGRFInspectWindow : Window {
 	/** GRFID of the caller of this window, 0 if it has no caller. */
 	uint32 caller_grfid;
 
-	/** The currently editted parameter, to update the right one. */
+	/** The currently edited parameter, to update the right one. */
 	byte current_edit_param;
 
 	Scrollbar *vscroll;
@@ -776,7 +776,7 @@ struct SpriteAlignerWindow : Window {
 					case WID_SA_LEFT:  spr->x_offs -= ZOOM_LVL_BASE; break;
 					case WID_SA_RIGHT: spr->x_offs += ZOOM_LVL_BASE; break;
 				}
-				/* Ofcourse, we need to redraw the sprite, but where is it used?
+				/* Of course, we need to redraw the sprite, but where is it used?
 				 * Everywhere is a safe bet. */
 				MarkWholeScreenDirty();
 				break;
diff --git a/src/newgrf_engine.cpp b/src/newgrf_engine.cpp
index c9d489e..fbc6901 100644
--- a/src/newgrf_engine.cpp
+++ b/src/newgrf_engine.cpp
@@ -628,7 +628,7 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
 			return v->GetCurrentMaxSpeed();
 
 		/* Variables which use the parameter */
-		case 0x60: // Count consist's engine ID occurance
+		case 0x60: // Count consist's engine ID occurrence
 			if (v->type != VEH_TRAIN) return v->GetEngine()->grf_prop.local_id == parameter ? 1 : 0;
 
 			{
@@ -1059,7 +1059,7 @@ bool UsesWagonOverride(const Vehicle *v)
 
 /**
  * Evaluate a newgrf callback for vehicles
- * @param callback The callback to evalute
+ * @param callback The callback to evaluate
  * @param param1   First parameter of the callback
  * @param param2   Second parameter of the callback
  * @param engine   Engine type of the vehicle to evaluate the callback for
@@ -1077,11 +1077,11 @@ uint16 GetVehicleCallback(CallbackID callback, uint32 param1, uint32 param2, Eng
 
 /**
  * Evaluate a newgrf callback for vehicles with a different vehicle for parent scope.
- * @param callback The callback to evalute
+ * @param callback The callback to evaluate
  * @param param1   First parameter of the callback
  * @param param2   Second parameter of the callback
  * @param engine   Engine type of the vehicle to evaluate the callback for
- * @param v        The vehicle to evaluate the callback for, or NULL if it doesnt exist yet
+ * @param v        The vehicle to evaluate the callback for, or NULL if it doesn't exist yet
  * @param parent   The vehicle to use for parent scope
  * @return The value the callback returned, or CALLBACK_FAILED if it failed
  */
@@ -1239,7 +1239,7 @@ void CommitVehicleListOrderChanges()
 	}
 	QSortT(ordering.Begin(), ordering.Length(), EnginePreSort);
 
-	/* Apply Insertion-Sort opeations */
+	/* Apply Insertion-Sort operations */
 	const ListOrderChange *end = _list_order_changes.End();
 	for (const ListOrderChange *it = _list_order_changes.Begin(); it != end; ++it) {
 		EngineID source = it->engine;
diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
index e052cc1..41016c1 100644
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -1466,7 +1466,7 @@ private:
 #if defined(ENABLE_NETWORK)
 /**
  * Show the content list window with all missing grfs from the given list.
- * @param list The list of grfs to check for missings / not exactly matching ones.
+ * @param list The list of grfs to check for missing / not exactly matching ones.
  */
 void ShowMissingContentWindow(const GRFConfig *list)
 {
@@ -1584,12 +1584,12 @@ public:
 		uint avs_extra_width = min_list_width - min_avs_width;   // Additional width needed for avs to reach min_list_width.
 		uint acs_extra_width = min_list_width - min_acs_width;   // Additional width needed for acs to reach min_list_width.
 
-		/* Use 2 or 3 colmuns? */
+		/* Use 2 or 3 columns? */
 		uint min_three_columns = min_avs_width + min_acs_width + min_inf_width + 2 * INTER_COLUMN_SPACING;
 		uint min_two_columns   = min_list_width + min_inf_width + INTER_COLUMN_SPACING;
 		bool use_three_columns = this->editable && (min_three_columns + MIN_EXTRA_FOR_3_COLUMNS <= given_width);
 
-		/* Info panel is a seperate column in both modes. Compute its width first. */
+		/* Info panel is a separate column in both modes. Compute its width first. */
 		uint extra_width, inf_width;
 		if (use_three_columns) {
 			extra_width = given_width - min_three_columns;
@@ -1619,11 +1619,11 @@ public:
 			acs_width = ComputeMaxSize(min_acs_width, acs_width, this->acs->GetHorizontalStepSize(sizing)) -
 					this->acs->padding_left - this->acs->padding_right;
 
-			/* Never use fill_y on these; the minimal size is choosen, so that the 3 column view looks nice */
+			/* Never use fill_y on these; the minimal size is chosen, so that the 3 column view looks nice */
 			uint avs_height = ComputeMaxSize(this->avs->smallest_y, given_height, this->avs->resize_y);
 			uint acs_height = ComputeMaxSize(this->acs->smallest_y, given_height, this->acs->resize_y);
 
-			/* Assign size and position to the childs. */
+			/* Assign size and position to the children. */
 			if (rtl) {
 				x += this->inf->padding_left;
 				this->inf->AssignSizePosition(sizing, x, y + this->inf->padding_top, inf_width, inf_height, rtl);
@@ -1662,7 +1662,7 @@ public:
 			if (this->editable) extra_height -= avs_height - this->avs->smallest_y;
 			uint acs_height = ComputeMaxSize(this->acs->smallest_y, this->acs->smallest_y + extra_height, this->acs->resize_y);
 
-			/* Assign size and position to the childs. */
+			/* Assign size and position to the children. */
 			if (rtl) {
 				x += this->inf->padding_left;
 				this->inf->AssignSizePosition(sizing, x, y + this->inf->padding_top, inf_width, inf_height, rtl);
diff --git a/src/newgrf_house.cpp b/src/newgrf_house.cpp
index 0f0cc31..d8cd3b7 100644
--- a/src/newgrf_house.cpp
+++ b/src/newgrf_house.cpp
@@ -32,7 +32,7 @@ HouseOverrideManager _house_mngr(NEW_HOUSE_OFFSET, HOUSE_MAX, INVALID_HOUSE_ID);
 /**
  * Constructor of a house scope resolver.
  * @param ro Surrounding resolver.
- * @param house_id Houe type being queried.
+ * @param house_id House type being queried.
  * @param tile %Tile containing the house.
  * @param town %Town containing the house.
  * @param not_yet_constructed House is still under construction.
diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
index b1cb80b..dd8c81c 100644
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -63,11 +63,11 @@ uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i, uint32 cur_grfid
 	const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
 
 	if (gfx < NEW_INDUSTRYTILEOFFSET) { // Does it belongs to an old type?
-		/* It is an old tile.  We have to see if it's been overriden */
+		/* It is an old tile.  We have to see if it's been overridden */
 		if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
 			return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
 		}
-		/* Overriden */
+		/* Overridden */
 		const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
 
 		if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
diff --git a/src/newgrf_industrytiles.cpp b/src/newgrf_industrytiles.cpp
index d23a382..1d7ec08 100644
--- a/src/newgrf_industrytiles.cpp
+++ b/src/newgrf_industrytiles.cpp
@@ -236,7 +236,7 @@ extern bool IsSlopeRefused(Slope current, Slope refused);
  * @param initial_random_bits Random bits of industry after construction
  * @param founder       Industry founder
  * @param creation_type The circumstances the industry is created under.
- * @return Suceeded or failed command.
+ * @return Succeeded or failed command.
  */
 CommandCost PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
 {
diff --git a/src/newgrf_sound.cpp b/src/newgrf_sound.cpp
index b82853a..dcc3416 100644
--- a/src/newgrf_sound.cpp
+++ b/src/newgrf_sound.cpp
@@ -195,7 +195,7 @@ bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
 }
 
 /**
- * Play a NewGRF sound effect at the location of a specfic tile.
+ * Play a NewGRF sound effect at the location of a specific tile.
  * @param file NewGRF triggering the sound effect.
  * @param sound_id Sound effect the NewGRF wants to play.
  * @param tile Location of the effect.
diff --git a/src/newgrf_spritegroup.cpp b/src/newgrf_spritegroup.cpp
index 0bbf467..7e60e82 100644
--- a/src/newgrf_spritegroup.cpp
+++ b/src/newgrf_spritegroup.cpp
@@ -58,7 +58,7 @@ static inline uint32 GetVariable(const ResolverObject *object, ScopeResolver *sc
 			if (object == NULL || object->grffile == NULL) return 0;
 			return object->grffile->GetParam(parameter);
 
-		/* Not a common variable, so evalute the feature specific variables */
+		/* Not a common variable, so evaluate the feature specific variables */
 		default: return scope->GetVariable(variable, parameter, available);
 	}
 }
@@ -117,7 +117,7 @@ ScopeResolver::~ScopeResolver() {}
 
 /**
  * Resolver constructor.
- * @param grffile NewGRF file asscoiated with the object (or \c NULL if none).
+ * @param grffile NewGRF file associated with the object (or \c NULL if none).
  * @param callback Callback code being resolved (default value is #CBID_NO_CALLBACK).
  * @param callback_param1 First parameter (var 10) of the callback (only used when \a callback is also set).
  * @param callback_param2 Second parameter (var 18) of the callback (only used when \a callback is also set).
diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index 93e2e58..dc05fe4 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -161,8 +161,8 @@ enum DeterministicSpriteGroupAdjustOperation {
 	DSGA_OP_RST,  ///< return b
 	DSGA_OP_STOP, ///< store a into persistent storage, indexed by b, return a
 	DSGA_OP_ROR,  ///< rotate a b positions to the right
-	DSGA_OP_SCMP, ///< (signed) comparision (a < b -> 0, a == b = 1, a > b = 2)
-	DSGA_OP_UCMP, ///< (unsigned) comparision (a < b -> 0, a == b = 1, a > b = 2)
+	DSGA_OP_SCMP, ///< (signed) comparison (a < b -> 0, a == b = 1, a > b = 2)
+	DSGA_OP_UCMP, ///< (unsigned) comparison (a < b -> 0, a == b = 1, a > b = 2)
 	DSGA_OP_SHL,  ///< a << b
 	DSGA_OP_SHR,  ///< (unsigned) a >> b
 	DSGA_OP_SAR,  ///< (signed) a >> b
diff --git a/src/newgrf_station.cpp b/src/newgrf_station.cpp
index 8092a95..bf09f13 100644
--- a/src/newgrf_station.cpp
+++ b/src/newgrf_station.cpp
@@ -613,7 +613,7 @@ static const SpriteGroup *ResolveStation(StationResolverObject *object)
  * @param st Station (NULL in GUI)
  * @param tile Station tile being drawn (INVALID_TILE in GUI)
  * @param var10 Value to put in variable 10; normally 0; 1 when resolving the groundsprite and SSF_SEPARATE_GROUND is set.
- * @return First sprite of the Action 1 spriteset ot use, minus an offset of 0x42D to accommodate for weird NewGRF specs.
+ * @return First sprite of the Action 1 spriteset to use, minus an offset of 0x42D to accommodate for weird NewGRF specs.
  */
 SpriteID GetCustomStationRelocation(const StationSpec *statspec, BaseStation *st, TileIndex tile, uint32 var10)
 {
@@ -704,7 +704,7 @@ int AllocateSpecToStation(const StationSpec *statspec, BaseStation *st, bool exe
 	if (i == MAX_SPECLIST) {
 		/* As final effort when the spec list is already full...
 		 * try to find the same spec and return that one. This might
-		 * result in slighty "wrong" (as per specs) looking stations,
+		 * result in slightly "wrong" (as per specs) looking stations,
 		 * but it's fairly unlikely that one reaches the limit anyways.
 		 */
 		for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
diff --git a/src/newgrf_station.h b/src/newgrf_station.h
index a536687..111a4dd 100644
--- a/src/newgrf_station.h
+++ b/src/newgrf_station.h
@@ -108,12 +108,12 @@ struct StationSpec {
 
 	/**
 	 * Bitmask of number of platforms available for the station.
-	 * 0..6 correpsond to 1..7, while bit 7 corresponds to >7 platforms.
+	 * 0..6 correspond to 1..7, while bit 7 corresponds to >7 platforms.
 	 */
 	byte disallowed_platforms;
 	/**
 	 * Bitmask of platform lengths available for the station.
-	 * 0..6 correpsond to 1..7, while bit 7 corresponds to >7 tiles long.
+	 * 0..6 correspond to 1..7, while bit 7 corresponds to >7 tiles long.
 	 */
 	byte disallowed_lengths;
 
diff --git a/src/newgrf_text.cpp b/src/newgrf_text.cpp
index be6c471..4b2f75f 100644
--- a/src/newgrf_text.cpp
+++ b/src/newgrf_text.cpp
@@ -182,7 +182,7 @@ private:
 	GRFText(byte langid_, const char *text_, size_t len_) : next(NULL), len(len_), langid(langid_)
 	{
 		/* We need to use memcpy instead of strcpy due to
-		 * the possibility of "choice lists" and therefor
+		 * the possibility of "choice lists" and therefore
 		 * intermediate string terminators. */
 		memcpy(this->text, text_, len);
 	}
diff --git a/src/newgrf_townname.h b/src/newgrf_townname.h
index e6b8ec2..0b1b389 100644
--- a/src/newgrf_townname.h
+++ b/src/newgrf_townname.h
@@ -18,7 +18,7 @@
 #include "strings_type.h"
 
 struct NamePart {
-	byte prob;     ///< The relative probablity of the following name to appear in the bottom 7 bits.
+	byte prob;     ///< The relative probability of the following name to appear in the bottom 7 bits.
 	union {
 		char *text;    ///< If probability bit 7 is clear
 		byte id;       ///< If probability bit 7 is set