diff --git a/Assets/VRM10/MToon10/Shaders/vrmc_materials_mtoon_lighting_mtoon.hlsl b/Assets/VRM10/MToon10/Shaders/vrmc_materials_mtoon_lighting_mtoon.hlsl
index 490c0d816..87917ac54 100644
--- a/Assets/VRM10/MToon10/Shaders/vrmc_materials_mtoon_lighting_mtoon.hlsl
+++ b/Assets/VRM10/MToon10/Shaders/vrmc_materials_mtoon_lighting_mtoon.hlsl
@@ -118,7 +118,7 @@ inline half3 GetMToonLighting_Rim_Matcap(const MToonInput input)
         
         return _MatcapColor.rgb * MTOON_SAMPLE_TEXTURE2D(_MatcapTex, matcapUv).rgb;
     }
-    return _MatcapColor.rgb;
+    return 0;
 }
 
 inline half3 GetMToonLighting_Rim(const UnityLighting unityLight, const MToonInput input, const half shadow)