diff --git a/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringBoneJointEditor.cs b/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringBoneJointEditor.cs
index df3feab2c..2b24129b7 100644
--- a/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringBoneJointEditor.cs
+++ b/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringBoneJointEditor.cs
@@ -216,9 +216,6 @@ namespace UniVRM10
             if (EditorGUI.EndChangeCheck())
             {
                 Undo.RecordObject(target, "m_angleLimitRotation");
-                // serializedObject.Update();
-                // m_angleLimitRotation.quaternionValue = rot;
-                // serializedObject.ApplyModifiedProperties();
                 m_target.m_angleLimitRotation = rot;
                 return true;
             }
@@ -412,4 +409,4 @@ namespace UniVRM10
             }
         }
     }
-}
\ No newline at end of file
+}