diff --git a/src/Umbraco.Web.Common/ModelsBuilder/RefreshingRazorViewEngine.cs b/src/Umbraco.Web.Common/ModelsBuilder/RefreshingRazorViewEngine.cs
index a541d61368..46dba59aba 100644
--- a/src/Umbraco.Web.Common/ModelsBuilder/RefreshingRazorViewEngine.cs
+++ b/src/Umbraco.Web.Common/ModelsBuilder/RefreshingRazorViewEngine.cs
@@ -180,6 +180,7 @@ namespace Umbraco.Cms.Web.Common.ModelsBuilder
             {
                 if (disposing)
                 {
+                    _inMemoryModelFactory.ModelsChanged -= InMemoryModelFactoryModelsChanged;
                     _locker.Dispose();
                 }