diff --git a/Assets/VRM10/Editor/Components/VRM10ObjectEditor.cs b/Assets/VRM10/Editor/Components/VRM10ObjectEditor.cs
index 4398a599d..fa61e3737 100644
--- a/Assets/VRM10/Editor/Components/VRM10ObjectEditor.cs
+++ b/Assets/VRM10/Editor/Components/VRM10ObjectEditor.cs
@@ -47,7 +47,6 @@ namespace UniVRM10
             }
             EditorGUILayout.Separator();
 
-            serializedObject.Update();
             switch (_tab)
             {
                 case Tabs.Meta:
@@ -66,7 +65,6 @@ namespace UniVRM10
                     m_firstPerson.OnInspectorGUI();
                     break;
             }
-            serializedObject.ApplyModifiedProperties();
         }
     }
 }
diff --git a/Assets/VRM10/Editor/Vrm10ExportDialog.cs b/Assets/VRM10/Editor/Vrm10ExportDialog.cs
index aa96fdef1..409390317 100644
--- a/Assets/VRM10/Editor/Vrm10ExportDialog.cs
+++ b/Assets/VRM10/Editor/Vrm10ExportDialog.cs
@@ -63,7 +63,7 @@ namespace UniVRM10
             }
         }
         VRM10Object m_tmpObject;
-        (VRM10MetaEditor, SerializedObject) m_metaEditor;
+        VRM10MetaEditor m_metaEditor;
 
         protected override void Initialize()
         {
@@ -235,7 +235,7 @@ namespace UniVRM10
             switch (_tab)
             {
                 case Tabs.Meta:
-                    if (m_metaEditor.Item1 == null)
+                    if (m_metaEditor == null)
                     {
                         SerializedObject so;
                         if (m_meta != null)
@@ -246,11 +246,9 @@ namespace UniVRM10
                         {
                             so = new SerializedObject(m_tmpObject);
                         }
-                        m_metaEditor = (VRM10MetaEditor.Create(so), so);
+                        m_metaEditor = VRM10MetaEditor.Create(so);
                     }
-                    m_metaEditor.Item2.Update();
-                    m_metaEditor.Item1.OnInspectorGUI();
-                    m_metaEditor.Item2.ApplyModifiedProperties();
+                    m_metaEditor.OnInspectorGUI();
                     break;
 
                 case Tabs.Mesh: