diff --git a/apps/openmw/mwworld/weather.hpp b/apps/openmw/mwworld/weather.hpp
index 4290b21aac..faa6355cee 100644
--- a/apps/openmw/mwworld/weather.hpp
+++ b/apps/openmw/mwworld/weather.hpp
@@ -159,7 +159,6 @@ namespace MWWorld
         MWRender::MoonState calculateState(unsigned int daysPassed, float gameHour);
 
     private:
-        float mSize;
         float mFadeInStart;
         float mFadeInFinish;
         float mFadeOutStart;