diff --git a/src/vim.h b/src/vim.h
index 9fc1070..1f4f17b 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -779,6 +779,7 @@
 #define EXPAND_FILETYPE		37
 #define EXPAND_FILES_IN_PATH	38
 #define EXPAND_OWNSYNTAX	39
+#define EXPAND_LOCALES		40
 
 /* Values for exmode_active (0 is no exmode) */
 #define EXMODE_NORMAL		1