diff --git a/Packages/VRM10/Editor/EditorWindow/Vrm10ColliderGroupsWindow.cs b/Packages/VRM10/Editor/EditorWindow/Vrm10ColliderGroupsWindow.cs
index 64111e517..a0f71f905 100644
--- a/Packages/VRM10/Editor/EditorWindow/Vrm10ColliderGroupsWindow.cs
+++ b/Packages/VRM10/Editor/EditorWindow/Vrm10ColliderGroupsWindow.cs
@@ -64,8 +64,6 @@ namespace UniVRM10
                     (v as ObjectField).BindProperty(prop);
                 },
             };
-            list.headerTitle = "Springs";
-            list.showFoldoutHeader = true;
             list.showAddRemoveFooter = true;
             list.style.marginLeft = 12;
             splitView.Add(list);
diff --git a/Packages/VRM10/Editor/EditorWindow/Vrm10SpringsWindow.cs b/Packages/VRM10/Editor/EditorWindow/Vrm10SpringsWindow.cs
index 05b5ba50c..de2d50116 100644
--- a/Packages/VRM10/Editor/EditorWindow/Vrm10SpringsWindow.cs
+++ b/Packages/VRM10/Editor/EditorWindow/Vrm10SpringsWindow.cs
@@ -64,8 +64,6 @@ namespace UniVRM10
                     (v as Label).BindProperty(prop);
                 },
             };
-            list.headerTitle = "Springs";
-            list.showFoldoutHeader = true;
             list.showAddRemoveFooter = true;
             list.style.marginLeft = 12;
             splitView.Add(list);