diff --git a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs b/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs
index 3de3fdffb..446331e47 100644
--- a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs
+++ b/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs
@@ -74,26 +74,34 @@ namespace UniVRM10
             };
         }
 
-        public void GUI()
+        public void DrawGUI()
         {
-            EditorGUILayout.Space();
-            EditorGUILayout.LabelField("Select Expression", EditorStyles.boldLabel);
-
-            m_mode = GUILayout.Toolbar(m_mode, MODES);
-            switch (m_mode)
+            var backup = GUI.enabled;
+            try
             {
-                case 0:
-                    SelectGUI();
-                    break;
+                GUI.enabled = true;
+                EditorGUILayout.Space();
+                EditorGUILayout.LabelField("Select Expression", EditorStyles.boldLabel);
 
-                case 1:
-                    m_clipList.GUI();
-                    break;
+                m_mode = GUILayout.Toolbar(m_mode, MODES);
+                switch (m_mode)
+                {
+                    case 0:
+                        SelectGUI();
+                        break;
 
-                default:
-                    throw new NotImplementedException();
+                    case 1:
+                        m_clipList.GUI();
+                        break;
+
+                    default:
+                        throw new NotImplementedException();
+                }
+            }
+            finally
+            {
+                GUI.enabled = backup;
             }
-
         }
 
         void SelectGUI()
diff --git a/Assets/VRM10/Editor/Components/Expression/SerializedExpressionEditor.cs b/Assets/VRM10/Editor/Components/Expression/SerializedExpressionEditor.cs
index e5956b65f..fc454c558 100644
--- a/Assets/VRM10/Editor/Components/Expression/SerializedExpressionEditor.cs
+++ b/Assets/VRM10/Editor/Components/Expression/SerializedExpressionEditor.cs
@@ -181,7 +181,7 @@ namespace UniVRM10
             return m_changed;
         }
 
-        List<bool> m_meshFolds = new List<bool>();
+        static List<bool> m_meshFolds = new List<bool>();
         bool MorphTargetBindsGUI()
         {
             bool changed = false;
diff --git a/Assets/VRM10/Editor/Components/Expression/VRM10ExpressionAvatarEditor.cs b/Assets/VRM10/Editor/Components/Expression/VRM10ExpressionAvatarEditor.cs
index 96633587b..1788a64e7 100644
--- a/Assets/VRM10/Editor/Components/Expression/VRM10ExpressionAvatarEditor.cs
+++ b/Assets/VRM10/Editor/Components/Expression/VRM10ExpressionAvatarEditor.cs
@@ -64,7 +64,7 @@ namespace UniVRM10
             base.OnInspectorGUI();
 
             // selector
-            Selector.GUI();
+            Selector.DrawGUI();
 
             // editor
             if (m_serializedEditor != null)