diff --git a/src/proto/popupwin.pro b/src/proto/popupwin.pro
index 7ac8612..a251f9a 100644
--- a/src/proto/popupwin.pro
+++ b/src/proto/popupwin.pro
@@ -1,5 +1,6 @@
 /* popupwin.c */
 int popup_on_border(win_T *wp, int row, int col);
+int popup_on_X_button(win_T *wp, int row, int col);
 void popup_start_drag(win_T *wp);
 void popup_drag(win_T *wp);
 void popup_set_firstline(win_T *wp);
@@ -10,6 +11,7 @@
 void f_popup_clear(typval_T *argvars, typval_T *rettv);
 void f_popup_create(typval_T *argvars, typval_T *rettv);
 void f_popup_atcursor(typval_T *argvars, typval_T *rettv);
+void popup_close_for_mouse_click(win_T *wp);
 void f_popup_filter_menu(typval_T *argvars, typval_T *rettv);
 void f_popup_filter_yesno(typval_T *argvars, typval_T *rettv);
 void f_popup_dialog(typval_T *argvars, typval_T *rettv);