diff --git a/libraries/render-utils/src/LightAmbient.slh b/libraries/render-utils/src/LightAmbient.slh
index acd30d527d..89d3f4faee 100644
--- a/libraries/render-utils/src/LightAmbient.slh
+++ b/libraries/render-utils/src/LightAmbient.slh
@@ -46,7 +46,7 @@ vec3 evalAmbientSpecularIrradiance(LightAmbient ambient, SurfaceData surface) {
             float levels = getLightAmbientMapNumMips(ambient);
             float m = 12.0 / (1.0+11.0*surface.roughness);
             float lod = levels - m;
-            lod = max(lod, 0);
+            lod = max(lod, 0.0);
             specularLight = evalSkyboxLight(lightDir, lod).xyz;
         }
     <@endif@>