diff --git a/jconfig.vc b/jconfig.vc
index e9d33e5..6a6455f 100644
--- a/jconfig.vc
+++ b/jconfig.vc
@@ -28,6 +28,13 @@ typedef unsigned char boolean;
 #endif
 #define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
 
+/* Define "INT32" as int, not long, per Windows custom */
+#if !(defined(_BASETSD_H_) || defined(_BASETSD_H))   /* don't conflict if basetsd.h already read */
+typedef short INT16;
+typedef signed int INT32;
+#endif
+#define XMD_H                   /* prevent jmorecfg.h from redefining it */
+
 
 #ifdef JPEG_INTERNALS