diff --git a/data/shaders/utils/SpecularIBL.frag b/data/shaders/utils/SpecularIBL.frag
index 04832dfa7..d8eec8fb9 100644
--- a/data/shaders/utils/SpecularIBL.frag
+++ b/data/shaders/utils/SpecularIBL.frag
@@ -7,5 +7,5 @@ vec3 SpecularIBL(vec3 normal, vec3 V, float roughness)
 
      // Assume 8 level of lod (ie 256x256 texture)
     float lodval = 8. * (1. - roughness);
-    return textureLod(probe, sampleDirection, lodval).rgb;
+    return max(textureLod(probe, sampleDirection, lodval).rgb, vec3(0.));
 }
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