diff --git a/src/proto/misc2.pro b/src/proto/misc2.pro
index 70c7dae..d18ae20 100644
--- a/src/proto/misc2.pro
+++ b/src/proto/misc2.pro
@@ -12,6 +12,7 @@
 int dec(pos_T *lp);
 int decl(pos_T *lp);
 linenr_T get_cursor_rel_lnum(win_T *wp, linenr_T lnum);
+void check_pos(buf_T *buf, pos_T *pos);
 void check_cursor_lnum(void);
 void check_cursor_col(void);
 void check_cursor_col_win(win_T *win);