diff --git a/apps/openmw/mwworld/weather.cpp b/apps/openmw/mwworld/weather.cpp
index 0d86d36ca..4a5586f55 100644
--- a/apps/openmw/mwworld/weather.cpp
+++ b/apps/openmw/mwworld/weather.cpp
@@ -606,13 +606,13 @@ void WeatherManager::update(float duration)
             float moonHeight = 1-std::abs((night-0.5)*2);
             int facing = (mHour > 0.f && mHour<12.f) ? 1 : -1;
             Vector3 masser(
-                -(1-moonHeight)*facing, 
-                -(1-moonHeight)*facing, 
+                (1-moonHeight)*facing, 
+                (1-moonHeight)*facing, 
                 moonHeight);
 
             Vector3 secunda(
-                -(1-moonHeight)*facing*0.8, 
-                -(1-moonHeight)*facing*1.25, 
+                (1-moonHeight)*facing*0.8, 
+                (1-moonHeight)*facing*1.25, 
                 moonHeight);
 
             mRendering->getSkyManager()->setMasserDirection(masser);