diff --git a/modules/model/mw.echo.dm.BundleNotificationItem.js b/modules/model/mw.echo.dm.BundleNotificationItem.js
index 923dcced7..62f736324 100644
--- a/modules/model/mw.echo.dm.BundleNotificationItem.js
+++ b/modules/model/mw.echo.dm.BundleNotificationItem.js
@@ -36,7 +36,6 @@
 		this.list = new mw.echo.dm.NotificationsList();
 		this.list.setItems( bundledNotificationModels );
 
-		this.list.aggregate( { update: 'itemUpdate' } );
 		this.list.connect( this, { itemUpdate: 'onItemUpdate' } );
 
 		// For bundles, 'read' is a computed state based on
diff --git a/modules/model/mw.echo.dm.ModelManager.js b/modules/model/mw.echo.dm.ModelManager.js
index 976a629b1..0aa0668f6 100644
--- a/modules/model/mw.echo.dm.ModelManager.js
+++ b/modules/model/mw.echo.dm.ModelManager.js
@@ -112,7 +112,6 @@
 
 		localModel = this.getNotificationModel( 'local' );
 		if ( localModel ) {
-			localModel.aggregate( { update: 'itemUpdate' } );
 			localModel.connect( this, { itemUpdate: 'checkLocalUnreadTalk' } );
 		}
 
diff --git a/modules/model/mw.echo.dm.NotificationsList.js b/modules/model/mw.echo.dm.NotificationsList.js
index f034651dc..30341491d 100644
--- a/modules/model/mw.echo.dm.NotificationsList.js
+++ b/modules/model/mw.echo.dm.NotificationsList.js
@@ -55,6 +55,9 @@
 			// Fallback on IDs
 			return b.getId() - a.getId();
 		} );
+
+		// Events
+		this.aggregate( { update: 'itemUpdate' } );
 	};
 
 	/* Initialization */
@@ -69,6 +72,13 @@
 	 * The list has been updated
 	 */
 
+	/**
+	 * @event itemUpdate
+	 * @param {mw.echo.dm.NotificationItem} item Item that has changed
+	 *
+	 * An item in the list has been updated
+	 */
+
 	/* Methods */
 
 	/**
diff --git a/modules/ui/mw.echo.ui.SubGroupListWidget.js b/modules/ui/mw.echo.ui.SubGroupListWidget.js
index a9ab55eac..f4938cfaf 100644
--- a/modules/ui/mw.echo.ui.SubGroupListWidget.js
+++ b/modules/ui/mw.echo.ui.SubGroupListWidget.js
@@ -85,9 +85,6 @@
 			// Update all items
 			update: 'resetItemsFromModel'
 		} );
-		// We must aggregate on item update, so we know when and if all
-		// items are read and can hide/show the 'mark all read' button
-		this.model.aggregate( { update: 'itemUpdate' } );
 		this.model.connect( this, { itemUpdate: 'toggleMarkAllReadButton' } );
 		this.markAllReadButton.connect( this, { click: 'onMarkAllReadButtonClick' } );