diff --git a/src/video/math_private.h b/src/video/math_private.h
index 3838639dd..c7cf051f1 100644
--- a/src/video/math_private.h
+++ b/src/video/math_private.h
@@ -19,6 +19,7 @@
 
 #include "SDL_endian.h"
 
+#define huge		really_big /* huge is a reserved keyword in VC++ 6.0 */
 #define int32_t 	math_int32_t
 #define u_int32_t	math_u_int32_t
 typedef Sint32 math_int32_t;