diff --git a/src/xpdev/genwrap.h b/src/xpdev/genwrap.h
index 7fbfed27ec60444e8b49aaeac35350a91b8a45bc..0322a88c72886edce715027bed416b7bfb26b34b 100644
--- a/src/xpdev/genwrap.h
+++ b/src/xpdev/genwrap.h
@@ -272,6 +272,7 @@ DLLEXPORT int		DLLCALL safe_snprintf(char *dst, size_t size, char *fmt, ...);
 
 #if defined(_WIN32)
 #define		msclock()	clock()
+#define		MSCLOCKS_PER_SEC	CLOCKS_PER_SEC
 #else
 #define		MSCLOCKS_PER_SEC	1000
 clock_t		msclock(void);