diff --git a/f8/msgqueue.h b/f8/msgqueue.h
index bbea8f9..46499cb 100644
--- a/f8/msgqueue.h
+++ b/f8/msgqueue.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <a8/singleton.h>
+
 namespace f8
 {
     typedef std::function<void (const a8::Args&)> MsgHandleFunc;