diff --git a/leenkx/blender/lnx/material/make_cluster.py b/leenkx/blender/lnx/material/make_cluster.py
index b3fdd25..8e40606 100644
--- a/leenkx/blender/lnx/material/make_cluster.py
+++ b/leenkx/blender/lnx/material/make_cluster.py
@@ -84,12 +84,12 @@ def write(vert: shader.Shader, frag: shader.Shader):
     frag.write('    roughness,')
     frag.write('    specular,')
     frag.write('    f0')
-
     if is_shadows:
-        if parse_opacity:
-            frag.write('\t, li, lightsArray[li * 3 + 2].x, lightsArray[li * 3 + 2].z != 0.0, opacity != 1.0') # bias
+        frag.write('\t, li, lightsArray[li * 3 + 2].x, lightsArray[li * 3 + 2].z != 0.0')
+        if '_ShadowMapTransparent' in wrd.world_defs and parse_opacity:
+            frag.write(', opacity != 1.0')
         else:
-            frag.write('\t, li, lightsArray[li * 3 + 2].x, lightsArray[li * 3 + 2].z != 0.0, false') # bias
+            frag.write(', false')
     if '_Spot' in wrd.world_defs:
         frag.write('\t, lightsArray[li * 3 + 2].y != 0.0')
         frag.write('\t, lightsArray[li * 3 + 2].y') # spot size (cutoff)