diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 582613e..f86e6ee 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -11,7 +11,7 @@
  * ex_cmds2.c: some more functions for command line commands
  */
 
-#if defined(WIN32) && defined(FEAT_CSCOPE)
+#if defined(MSDOS) || defined(WIN16) || defined(WIN32) || defined(_WIN64)
 # include "vimio.h"	/* for mch_open(), must be before vim.h */
 #endif