diff --git a/src/vim.h b/src/vim.h
index 3ed981e..35b2310 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -782,6 +782,7 @@
 #define EXPAND_OWNSYNTAX	39
 #define EXPAND_LOCALES		40
 #define EXPAND_HISTORY		41
+#define EXPAND_USER		42
 
 /* Values for exmode_active (0 is no exmode) */
 #define EXMODE_NORMAL		1