diff --git a/sc2/src/libs/graphics/font.h b/sc2/src/libs/graphics/font.h
index 07eced275..1d3828a9f 100644
--- a/sc2/src/libs/graphics/font.h
+++ b/sc2/src/libs/graphics/font.h
@@ -27,7 +27,7 @@ typedef struct FontPage
 {
 	struct FontPage *next;
 	UniChar pageStart;
-#define CHARACTER_PAGE_MASK 0xffffff800
+#define CHARACTER_PAGE_MASK 0xfffff800
 	UniChar firstChar;
 	size_t numChars;
 	TFB_Char *charDesc;