diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index ce45a042722d01a5887cf2bc76d45211c0433c1a..498410bc2ca65e7a4f2dd59232cd5e21863b5ed0 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -3892,6 +3892,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gReflectionMipProgram.mFeatures.isDeferred = true;
         gReflectionMipProgram.mFeatures.hasGamma = true;
         gReflectionMipProgram.mFeatures.hasAtmospherics = true;
+        gReflectionMipProgram.mFeatures.calculatesAtmospherics = true;
         gReflectionMipProgram.mShaderFiles.clear();
         gReflectionMipProgram.mShaderFiles.push_back(make_pair("interface/splattexturerectV.glsl", GL_VERTEX_SHADER));
         gReflectionMipProgram.mShaderFiles.push_back(make_pair("interface/reflectionmipF.glsl", GL_FRAGMENT_SHADER));