diff -r ea72be6c9bfb src/settings_gui.cpp
--- a/src/settings_gui.cpp	Sun Nov 02 12:53:58 2008 +0100
+++ b/src/settings_gui.cpp	Sun Nov 02 15:20:26 2008 +0100
@@ -751,6 +751,8 @@
 };
 
 struct PatchesSelectionWindow : Window {
+	static const int SETTINGTREE_LEFT_OFFSET; ///< Position of left edge of patch values
+
 	static GameSettings *patches_ptr;  ///< Pointer to the game settings being displayed and modified
 	static int patches_max;  ///< Maximal number of patches on a single page
 
@@ -760,6 +762,11 @@
 
 	PatchesSelectionWindow(const WindowDesc *desc) : Window(desc)
 	{
+		/* Check that the widget doesn't get moved without adapting the constant as well.
+		 * SETTINGTREE_LEFT_OFFSET should be 5 pixels to the right of the left edge of the panel
+		 */
+		assert(this->widget[PATCHSEL_OPTIONSPANEL].left + 5 == SETTINGTREE_LEFT_OFFSET);
+
 		static bool first_time = true;
 
 		patches_ptr = (_game_mode == GM_MENU) ? &_settings_newgame : &_settings_game;
@@ -798,14 +805,14 @@
 
 	virtual void OnPaint()
 	{
-		int x, y;
+		int y;
 		const PatchPage *page = &_patches_page[this->page];
 		uint i;
 
 		/* Set up selected category */
 		this->DrawWidgets();
 
-		x = 5;
+		int x = SETTINGTREE_LEFT_OFFSET;
 		y = 47;
 		for (i = 0; i != page->num; i++) {
 			const SettingDesc *sd = page->entries[i].setting;
@@ -867,7 +874,7 @@
 				y = pt.y - 46 - 1;  // Shift y coordinate
 				if (y < 0) return;  // Clicked above first entry
 
-				x = pt.x - 5;  // Shift x coordinate
+				x = pt.x - SETTINGTREE_LEFT_OFFSET;  // Shift x coordinate
 				if (x < 0) return;  // Clicked left of the entry
 
 				btn = y / SETTING_HEIGHT;  // Compute which setting is selected
@@ -975,6 +982,7 @@
 };
 
 GameSettings *PatchesSelectionWindow::patches_ptr = NULL;
+const int PatchesSelectionWindow::SETTINGTREE_LEFT_OFFSET = 5;
 int PatchesSelectionWindow::patches_max = 0;
 
 static const Widget _patches_selection_widgets[] = {