diff --git a/src/game/OutdoorPvP.h b/src/game/OutdoorPvP.h
index 3c3db7a49a9..e72461bd234 100644
--- a/src/game/OutdoorPvP.h
+++ b/src/game/OutdoorPvP.h
@@ -21,6 +21,7 @@
 
 #include "Util.h"
 #include "SharedDefines.h"
+#include "GameObject.h"
 
 #include <map>
 #include <set>