diff --git a/engine/src/core-data/Common/MatDefs/Light/Lighting.frag b/engine/src/core-data/Common/MatDefs/Light/Lighting.frag
index 76f0e1512..eb1c3fdb2 100644
--- a/engine/src/core-data/Common/MatDefs/Light/Lighting.frag
+++ b/engine/src/core-data/Common/MatDefs/Light/Lighting.frag
@@ -126,6 +126,10 @@ vec2 computeLighting(in vec3 wvNorm, in vec3 wvViewDir, in vec3 wvLightDir){
     float att = vLightDir.w;
    #endif
 
+   if (m_Shininess <= 1.0) {
+       specularFactor = 0.0; // should be one instruction on most cards ..
+   }
+
    specularFactor *= diffuseFactor;
 
    return vec2(diffuseFactor, specularFactor) * vec2(att);