diff --git a/hmp.h b/hmp.h
index 212e5d2..a70804d 100644
--- a/hmp.h
+++ b/hmp.h
@@ -105,5 +105,7 @@
 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str);
 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str);
 void ringbuf_read_completion(ReadLineState *rs, int nb_args, const char *str);
+void watchdog_action_completion(ReadLineState *rs, int nb_args,
+                                const char *str);
 
 #endif