diff --git a/apps/openmw/mwgui/inventorywindow.hpp b/apps/openmw/mwgui/inventorywindow.hpp
index a40b27564a..343fe6999c 100644
--- a/apps/openmw/mwgui/inventorywindow.hpp
+++ b/apps/openmw/mwgui/inventorywindow.hpp
@@ -130,9 +130,9 @@ namespace MWGui
 
         void onBackgroundSelected();
 
-        enum ControllerAction
+        enum class ControllerAction
         {
-            None = 0,
+            None,
             Use,
             Transfer,
             Sell,