diff --git a/src/proto/popupwin.pro b/src/proto/popupwin.pro
new file mode 100644
index 0000000..a3d78b8
--- /dev/null
+++ b/src/proto/popupwin.pro
@@ -0,0 +1,7 @@
+/* popupwin.c */
+void f_popup_create(typval_T *argvars, typval_T *rettv);
+void f_popup_close(typval_T *argvars, typval_T *rettv);
+void popup_close(int nr);
+void close_all_popups(void);
+void ex_popupclear(exarg_T *eap);
+/* vim: set ft=c : */