diff --git a/src/proto/ex_docmd.pro b/src/proto/ex_docmd.pro
index 94e1393..ec6e573 100644
--- a/src/proto/ex_docmd.pro
+++ b/src/proto/ex_docmd.pro
@@ -25,6 +25,7 @@
 void not_exiting __ARGS((void));
 void tabpage_close __ARGS((int forceit));
 void tabpage_close_other __ARGS((tabpage_T *tp, int forceit));
+void ex_all __ARGS((exarg_T *eap));
 void handle_drop __ARGS((int filec, char_u **filev, int split));
 void alist_clear __ARGS((alist_T *al));
 void alist_init __ARGS((alist_T *al));