diff --git a/include/win32/bc/config.h b/include/win32/bc/config.h
index 3d91f62..33ba162 100644
--- a/include/win32/bc/config.h
+++ b/include/win32/bc/config.h
@@ -249,9 +249,6 @@
 /* Posix, needed for limits.h and Unix stuffs to work right */
 #define _POSIX_
 
-/* Define if we've scitech MGL library and mgraph.h */
-#define HAVE_MGRAPH_H 1
-
 /* Dir used for shared game data */
 #define FS_SHAREPATH "."