diff --git a/test/Microsoft.AspNetCore.Mvc.ViewFeatures.Test/ViewFeatures/SessionStateTempDataProviderTest.cs b/test/Microsoft.AspNetCore.Mvc.ViewFeatures.Test/ViewFeatures/SessionStateTempDataProviderTest.cs
index 84b11957cf..d73b3ec357 100644
--- a/test/Microsoft.AspNetCore.Mvc.ViewFeatures.Test/ViewFeatures/SessionStateTempDataProviderTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.ViewFeatures.Test/ViewFeatures/SessionStateTempDataProviderTest.cs
@@ -396,6 +396,8 @@ namespace Microsoft.AspNetCore.Mvc.ViewFeatures
 
             public IEnumerable<string> Keys { get { return _innerDictionary.Keys; } }
 
+            public string Id => "TestId";
+
             public Task LoadAsync()
             {
                 return Task.FromResult(0);