diff --git a/resources/translations/en_US.json b/resources/translations/en_US.json
index 7d22395..a44cd82 100644
--- a/resources/translations/en_US.json
+++ b/resources/translations/en_US.json
@@ -108,6 +108,7 @@
     "Tools.no_armature_selected": "No armature selected",
     "Tools.select_armature": "Please select an armature",
     "Tools.tools_title.label": "Tools:",
+    "Tools.separate_by.label": "Separate By:",
     "Tools.separate_by_materials.label": "Separate by Materials",
     "Tools.separate_by_materials.desc": "Separate the selected mesh by materials",
     "Tools.separate_by_materials.success": "Mesh separated by materials successfully",
diff --git a/resources/translations/ja_JP.json b/resources/translations/ja_JP.json
index 36589c1..f091290 100644
--- a/resources/translations/ja_JP.json
+++ b/resources/translations/ja_JP.json
@@ -108,6 +108,7 @@
     "Tools.no_armature_selected": "アーマチュアが選択されていません",
     "Tools.select_armature": "アーマチュアを選択してください",
     "Tools.tools_title.label": "ツール：",
+    "Tools.separate_by.label": "別:",
     "Tools.separate_by_materials.label": "マテリアルで分離",
     "Tools.separate_by_materials.desc": "選択されたメッシュをマテリアルごとに分離します",
     "Tools.separate_by_materials.success": "メッシュがマテリアルごとに正常に分離されました",
diff --git a/ui/tools.py b/ui/tools.py
index 5d02b86..7d8dc73 100644
--- a/ui/tools.py
+++ b/ui/tools.py
@@ -33,8 +33,8 @@ class AvatarToolkitToolsPanel(bpy.types.Panel):
             row.operator(CreateDigitigradeLegs.bl_idname, text=t("Tools.create_digitigrade_legs.label"), icon='BONE_DATA')
             layout.separator()
             row = layout.row(align=True)
+            layout.label(text=t("Tools.separate_by.label"), icon='MESH')
             row.operator(SeparateByMaterials.bl_idname, text=t("Tools.separate_by_materials.label"), icon='MATERIAL')
-            row = layout.row(align=True)
             row.operator(SeparateByLooseParts.bl_idname, text=t("Tools.separate_by_loose_parts.label"), icon='OUTLINER_OB_MESH')
             row = layout.row(align=True)
             row.operator(ApplyTransforms.bl_idname, text=t("Tools.apply_transforms.label"), icon='OBJECT_ORIGIN')