diff --git a/GPU/ge_constants.h b/GPU/ge_constants.h
index bf0623e8d2..677697265c 100644
--- a/GPU/ge_constants.h
+++ b/GPU/ge_constants.h
@@ -469,6 +469,9 @@ enum GETexFunc
 	GE_TEXFUNC_BLEND = 2,
 	GE_TEXFUNC_REPLACE = 3,
 	GE_TEXFUNC_ADD = 4,
+	GE_TEXFUNC_UNKNOWN1 = 5,
+	GE_TEXFUNC_UNKNOWN2 = 6,
+	GE_TEXFUNC_UNKNOWN3 = 7,
 };
 
 enum GEStencilOp