diff --git a/tests/GameCult.Caching.Tests/CultInspectorModelTests.cs b/tests/GameCult.Caching.Tests/CultInspectorModelTests.cs
index c0036ea4..77794f90 100644
--- a/tests/GameCult.Caching.Tests/CultInspectorModelTests.cs
+++ b/tests/GameCult.Caching.Tests/CultInspectorModelTests.cs
@@ -361,7 +361,7 @@ namespace GameCult.Caching.Tests
 
         public abstract class InspectLabeledBase
         {
-            [CultInspectorLabel("Base Label")]
+            [Key(1)] [CultInspectorLabel("Base Label")]
             public abstract string Tag { get; set; }
         }