diff --git a/tools/perf/util/ui/helpline.h b/tools/perf/util/ui/helpline.h
index 5d1e5e7..ab6028d 100644
--- a/tools/perf/util/ui/helpline.h
+++ b/tools/perf/util/ui/helpline.h
@@ -4,6 +4,7 @@
 void ui_helpline__init(void);
 void ui_helpline__pop(void);
 void ui_helpline__push(const char *msg);
+void ui_helpline__vpush(const char *fmt, va_list ap);
 void ui_helpline__fpush(const char *fmt, ...);
 void ui_helpline__puts(const char *msg);