diff --git a/src/vim.h b/src/vim.h
index 7ea947e..483c97d 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -709,6 +709,7 @@
 #define EXPAND_USER_LIST	31
 #define EXPAND_SHELLCMD		32
 #define EXPAND_CSCOPE		33
+#define EXPAND_SIGN		34
 
 /* Values for exmode_active (0 is no exmode) */
 #define EXMODE_NORMAL		1