diff -r b75cc01645af src/fontcache.cpp
--- src/fontcache.cpp	Sun Jul 20 07:55:52 2008 +0800
+++ src/fontcache.cpp	Sun Jul 20 08:03:40 2008 +0800
@@ -428,13 +428,15 @@
 	y_adj = (size == FS_NORMAL) ? 2 : 0;
 	sprite.y_offs = GetCharacterHeight(size) - slot->bitmap_top - y_adj;
 
+	bool binary_bitmap = (slot->bitmap.palette_mode == FT_PIXEL_MODE_MONO);
+
 	/* Draw shadow for medium size */
 	if (size == FS_NORMAL) {
 		for (y = 0; y < slot->bitmap.rows; y++) {
 			for (x = 0; x < slot->bitmap.width; x++) {
-				if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
+				if (binary_bitmap ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
 					sprite.data[1 + x + (1 + y) * sprite.width].m = SHADOW_COLOUR;
-					sprite.data[1 + x + (1 + y) * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
+					sprite.data[1 + x + (1 + y) * sprite.width].a = binary_bitmap ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
 				}
 			}
 		}
@@ -442,9 +444,9 @@
 
 	for (y = 0; y < slot->bitmap.rows; y++) {
 		for (x = 0; x < slot->bitmap.width; x++) {
-			if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
+			if (binary_bitmap ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
 				sprite.data[x + y * sprite.width].m = FACE_COLOUR;
-				sprite.data[x + y * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
+				sprite.data[x + y * sprite.width].a = binary_bitmap ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
 			}
 		}
 	}