diff --git a/src/Umbraco.Core/Cache/CacheRefresherNotificationFactory.cs b/src/Umbraco.Core/Cache/CacheRefresherNotificationFactory.cs
index 9e4210cd2b..fc9cdefe27 100644
--- a/src/Umbraco.Core/Cache/CacheRefresherNotificationFactory.cs
+++ b/src/Umbraco.Core/Cache/CacheRefresherNotificationFactory.cs
@@ -1,4 +1,5 @@
-using System;
+using System;
+using Umbraco.Extensions;
 using Umbraco.Cms.Core.Sync;
 
 namespace Umbraco.Cms.Core.Cache