diff --git a/Assets/Cryville.EEW.Unity/UI/EventGroupView.cs b/Assets/Cryville.EEW.Unity/UI/EventGroupView.cs
index 3aecef8..278a1d6 100644
--- a/Assets/Cryville.EEW.Unity/UI/EventGroupView.cs
+++ b/Assets/Cryville.EEW.Unity/UI/EventGroupView.cs
@@ -14,9 +14,12 @@ namespace Cryville.EEW.Unity.UI {
 		[SerializeField] GameObject m_listViewRail;
 		[SerializeField] GameObject m_expander;
 
-		void Start() {
+		void OnEnable() {
 			m_groupHeader.onClick.AddListener(OnGroupHeaderClicked);
 		}
+		void OnDisable() {
+			m_groupHeader.onClick.RemoveListener(OnGroupHeaderClicked);
+		}
 		void OnGroupHeaderClicked() {
 			SetExpanded(!m_listViewContainer.activeSelf);
 		}
diff --git a/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs b/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
index 2a2b548..8a5dcc5 100644
--- a/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
+++ b/Assets/Cryville.EEW.Unity/UI/EventOngoingView.cs
@@ -47,9 +47,12 @@ namespace Cryville.EEW.Unity.UI {
 		void Awake() {
 			_dockRatioTweener = new(() => m_dockLayoutGroup.DockOccupiedRatio, v => m_dockLayoutGroup.DockOccupiedRatio = v, Tweeners.Single);
 		}
-		void Start() {
+		void OnEnable() {
 			m_button.onClick.AddListener(OnViewClicked);
 		}
+		void OnDisable() {
+			m_button.onClick.RemoveListener(OnViewClicked);
+		}
 		void OnViewClicked() {
 			EventOngoingListView.Instance.OnItemClicked(_viewModel);
 		}
diff --git a/Assets/Cryville.EEW.Unity/UI/EventReportView.cs b/Assets/Cryville.EEW.Unity/UI/EventReportView.cs
index 8941f42..2606893 100644
--- a/Assets/Cryville.EEW.Unity/UI/EventReportView.cs
+++ b/Assets/Cryville.EEW.Unity/UI/EventReportView.cs
@@ -14,9 +14,12 @@ namespace Cryville.EEW.Unity.UI {
 		[SerializeField] TMPLocalizedText m_revisionView;
 		ReportViewModel _viewModel;
 
-		protected virtual void Start() {
+		protected virtual void OnEnable() {
 			if (m_reportViewButton != null) m_reportViewButton.onClick.AddListener(OnViewClicked);
 		}
+		protected virtual void OnDisable() {
+			if (m_reportViewButton != null) m_reportViewButton.onClick.RemoveListener(OnViewClicked);
+		}
 		void OnViewClicked() {
 			Worker.Instance.SetSelected(_viewModel);
 		}
diff --git a/Assets/Cryville.EEW.Unity/UI/EventUnitView.cs b/Assets/Cryville.EEW.Unity/UI/EventUnitView.cs
index 4ad9163..d6ff68d 100644
--- a/Assets/Cryville.EEW.Unity/UI/EventUnitView.cs
+++ b/Assets/Cryville.EEW.Unity/UI/EventUnitView.cs
@@ -8,10 +8,14 @@ namespace Cryville.EEW.Unity.UI {
 
 		[SerializeField] Button m_revisionViewContainerButton;
 
-		protected override void Start() {
-			base.Start();
+		protected override void OnEnable() {
+			base.OnEnable();
 			m_revisionViewContainerButton.onClick.AddListener(OnRevisionViewClicked);
 		}
+		protected override void OnDisable() {
+			base.OnDisable();
+			m_revisionViewContainerButton.onClick.RemoveListener(OnRevisionViewClicked);
+		}
 		void OnRevisionViewClicked() {
 			m_listView.gameObject.SetActive(!m_listView.gameObject.activeSelf);
 		}