diff --git a/Assets/Cryville.Common/Unity/Tweener.cs b/Assets/Cryville.Common/Unity/Tweener.cs
index cdd4920..ad239d9 100644
--- a/Assets/Cryville.Common/Unity/Tweener.cs
+++ b/Assets/Cryville.Common/Unity/Tweener.cs
@@ -1,7 +1,7 @@
 using System;
 using UnityEngine;
 
-namespace Utils {
+namespace Cryville.Common.Unity {
 	public class PropertyTweener<T> {
 		readonly Func<T> _getter;
 		readonly Action<T> _setter;
diff --git a/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs b/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
index 2846e76..caa7ba5 100644
--- a/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
+++ b/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
@@ -1,10 +1,10 @@
+using Cryville.Common.Unity;
 using Cryville.Common.Unity.UI;
 using Cryville.EEW.Report;
 using System.Globalization;
 using System.Linq;
 using UnityEngine;
 using UnityEngine.UI;
-using Utils;
 
 namespace Cryville.EEW.Unity.UI {
 	class EventOngoingView : MonoBehaviour {