diff --git a/apps/openmw/mwgui/mapwindow.hpp b/apps/openmw/mwgui/mapwindow.hpp
index 2f5ded012..a07adc1f3 100644
--- a/apps/openmw/mwgui/mapwindow.hpp
+++ b/apps/openmw/mwgui/mapwindow.hpp
@@ -2,6 +2,7 @@
 #define MWGUI_MAPWINDOW_H
 
 #include "windowpinnablebase.hpp"
+#include <cstdint>
 
 namespace MWRender
 {