diff --git a/Tools/Replay/LR_MsgHandler.h b/Tools/Replay/LR_MsgHandler.h
index 1f34a53897..b172563bd9 100644
--- a/Tools/Replay/LR_MsgHandler.h
+++ b/Tools/Replay/LR_MsgHandler.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "MsgHandler.h"
+#include <AP_GPS/AP_GPS.h>
 
 #include <functional>