diff --git a/src/proto/buffer.pro b/src/proto/buffer.pro
index b2ade2b..861fba2 100644
--- a/src/proto/buffer.pro
+++ b/src/proto/buffer.pro
@@ -45,7 +45,7 @@
 char_u *alist_name __ARGS((aentry_T *aep));
 void do_arg_all __ARGS((int count, int forceit));
 void ex_buffer_all __ARGS((exarg_T *eap));
-void do_modelines __ARGS((void));
+void do_modelines __ARGS((int win_only));
 int read_viminfo_bufferlist __ARGS((vir_T *virp, int writing));
 void write_viminfo_bufferlist __ARGS((FILE *fp));
 char *buf_spname __ARGS((buf_T *buf));