diff --git a/Assets/OSCmooth/Editor/OSCmoothWindow.cs b/Assets/OSCmooth/Editor/OSCmoothWindow.cs
index a3309e0..f4f5f97 100644
--- a/Assets/OSCmooth/Editor/OSCmoothWindow.cs
+++ b/Assets/OSCmooth/Editor/OSCmoothWindow.cs
@@ -126,6 +126,7 @@ void DrawGUI()
                     AssetDatabase.SaveAssets();
                 }
 
+                EditorGUILayout.EndHorizontal();
 
                 _animatorController = AssetDatabase.LoadAssetAtPath<AnimatorController>(AssetDatabase.GetAssetPath(_avDescriptor.baseAnimationLayers[_layerSelect].animatorController));