diff --git a/src/proto/ex_cmds2.pro b/src/proto/ex_cmds2.pro
index 977f5c0..f241d37 100644
--- a/src/proto/ex_cmds2.pro
+++ b/src/proto/ex_cmds2.pro
@@ -22,6 +22,7 @@
 long check_due_timer(void);
 timer_T *find_timer(int id);
 void stop_timer(timer_T *timer);
+void stop_all_timers(void);
 void add_timer_info(typval_T *rettv, timer_T *timer);
 void add_timer_info_all(typval_T *rettv);
 int set_ref_in_timer(int copyID);