diff --git a/libraries/render-utils/src/local_lights_shading.slf b/libraries/render-utils/src/local_lights_shading.slf
index d3542fcdfa..0b884d8bc0 100644
--- a/libraries/render-utils/src/local_lights_shading.slf
+++ b/libraries/render-utils/src/local_lights_shading.slf
@@ -85,7 +85,7 @@ void main(void) {
     vec3 fragEyeDir = normalize(fragEyeVector.xyz);
 
     // COmpute the rougness into gloss2 once:
-    float fragGloss2 = pow(frag.roughness + 0.001, 2.0);
+    float fragGloss2 = pow(frag.roughness + 0.001, 4.0);
     bool withScattering = (frag.scattering * isScatteringEnabled() > 0.0);
 
     int numLightTouching = 0;