diff --git a/apps/openmw/mwworld/worldimp.hpp b/apps/openmw/mwworld/worldimp.hpp
index 784c01593..d7fec2fec 100644
--- a/apps/openmw/mwworld/worldimp.hpp
+++ b/apps/openmw/mwworld/worldimp.hpp
@@ -69,7 +69,7 @@ namespace MWWorld
 
     /// \brief The game world and its visual representation
 
-    class World : public MWBase::World
+    class World final: public MWBase::World
     {
             Resource::ResourceSystem* mResourceSystem;