diff --git a/reactos/tools/rbuild/pch.h b/reactos/tools/rbuild/pch.h
index 499db06ad6e..c46abbc1487 100644
--- a/reactos/tools/rbuild/pch.h
+++ b/reactos/tools/rbuild/pch.h
@@ -29,6 +29,7 @@ inline char* strlwr ( char* str )
 #define _finite __finite
 #define _isnan __isnan
 #define stricmp strcasecmp
+#define MAX_PATH PATH_MAX 
 #endif
 
 #endif//PCH_H