diff --git a/src/io_scene_vrm/editor/mtoon1/ops.py b/src/io_scene_vrm/editor/mtoon1/ops.py
index 0d9550e75..e40500dac 100644
--- a/src/io_scene_vrm/editor/mtoon1/ops.py
+++ b/src/io_scene_vrm/editor/mtoon1/ops.py
@@ -823,10 +823,9 @@ def assign(
             return
 
         if not modifier and not create_modifier:
-            if not no_outline:
-                mtoon.outline_width_mode = (
-                    Mtoon1VrmcMaterialsMtoonPropertyGroup.OUTLINE_WIDTH_MODE_NONE
-                )
+            mtoon.outline_width_mode = (
+                Mtoon1VrmcMaterialsMtoonPropertyGroup.OUTLINE_WIDTH_MODE_NONE
+            )
             return
 
         outline_material_name = f"MToon Outline ({material.name})"