diff --git a/src/vim.h b/src/vim.h
index a58ce7c..93c9446 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1021,6 +1021,7 @@
 #define OPT_LOCAL	4	/* use local value */
 #define OPT_MODELINE	8	/* option in modeline */
 #define OPT_WINONLY	16	/* only set window-local options */
+#define OPT_NOWIN	32	/* don't set window-local options */
 
 /* Magic chars used in confirm dialog strings */
 #define DLG_BUTTON_SEP	'\n'