diff --git a/src/proto/gui.pro b/src/proto/gui.pro
index d9dea65..eacc2ac 100644
--- a/src/proto/gui.pro
+++ b/src/proto/gui.pro
@@ -34,6 +34,7 @@
 int gui_xy2colrow __ARGS((int x, int y, int *colp));
 void gui_menu_cb __ARGS((vimmenu_T *menu));
 void gui_init_which_components __ARGS((char_u *oldval));
+void gui_remove_scrollbars __ARGS((void));
 void gui_create_scrollbar __ARGS((scrollbar_T *sb, int type, win_T *wp));
 scrollbar_T *gui_find_scrollbar __ARGS((long ident));
 void gui_drag_scrollbar __ARGS((scrollbar_T *sb, long value, int still_dragging));