diff --git a/apps/openmw/mwbase/windowmanager.hpp b/apps/openmw/mwbase/windowmanager.hpp
index 2783fd21d5..a610a66c57 100644
--- a/apps/openmw/mwbase/windowmanager.hpp
+++ b/apps/openmw/mwbase/windowmanager.hpp
@@ -13,6 +13,7 @@
 
 #include "../mwgui/mode.hpp"
 
+#include <components/esm/refid.hpp>
 #include <components/sdlutil/events.hpp>
 
 namespace ESM