diff --git a/src/proto/fileio.pro b/src/proto/fileio.pro
index 52ae642..e42c639 100644
--- a/src/proto/fileio.pro
+++ b/src/proto/fileio.pro
@@ -15,7 +15,7 @@
 int vim_rename __ARGS((char_u *from, char_u *to));
 int check_timestamps __ARGS((int focus));
 int buf_check_timestamp __ARGS((buf_T *buf, int focus));
-void buf_reload __ARGS((buf_T *buf));
+void buf_reload __ARGS((buf_T *buf, int orig_mode));
 void buf_store_time __ARGS((buf_T *buf, struct stat *st, char_u *fname));
 void write_lnum_adjust __ARGS((linenr_T offset));
 void vim_deltempdir __ARGS((void));