diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
index 3fe3b7afd3..0607ea8bc5 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
@@ -115,7 +115,7 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
         //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
     temp2.x *= glow.x;
         //higher glow.x gives dimmer glow (because next step is 1 / "angle")
-    temp2.x = pow(temp2.x, glow.z * 0.2);
+    temp2.x = pow(temp2.x, glow.z);
         //glow.z should be negative, so we're doing a sort of (1 / "angle") function
 
     //add "minimum anti-solar illumination"