diff --git a/src/vim.h b/src/vim.h
index bf50dca..d0b979f 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -757,6 +757,7 @@
 #define EXPAND_USER		42
 #define EXPAND_SYNTIME		43
 #define EXPAND_USER_ADDR_TYPE	44
+#define EXPAND_PACKADD		45
 
 /* Values for exmode_active (0 is no exmode) */
 #define EXMODE_NORMAL		1