diff --git a/include/cross.h b/include/cross.h
index 20d2d5a9..2dc3d2cf 100644
--- a/include/cross.h
+++ b/include/cross.h
@@ -46,7 +46,9 @@
 #define CROSS_NONE	0
 #define CROSS_FILE	1
 #define CROSS_DIR	2
-
+#if defined (_MSC_VER)
+#define ftruncate(blah,blah2) chsize(blah,blah2)
+#endif
 
 extern const char * dosbox_datadir;