diff --git a/apps/openmw/mwworld/weather.cpp b/apps/openmw/mwworld/weather.cpp
index 47f4361915..044d6e83a7 100644
--- a/apps/openmw/mwworld/weather.cpp
+++ b/apps/openmw/mwworld/weather.cpp
@@ -26,11 +26,7 @@ const float WeatherGlobals::mSunsetTime = 18;
 const float WeatherGlobals::mSunriseDuration = 2;
 const float WeatherGlobals::mSunsetDuration = 2;
 const float WeatherGlobals::mWeatherUpdateTime = 20.f;
-const float WeatherGlobals::mThunderFrequency = .4;
-const float WeatherGlobals::mThunderThreshold = 0.6;
-const float WeatherGlobals::mThunderSoundDelay = 0.25;
 
-const float WeatherGlobals::mWeatherUpdateTime = 20.f;
 
 // morrowind sets these per-weather, but since they are only used by 'thunderstorm'
 // weather setting anyway, we can just as well set them globally