diff --git a/src/Microsoft.ML.Transforms/PermutationFeatureImportanceExtensions.cs b/src/Microsoft.ML.Transforms/PermutationFeatureImportanceExtensions.cs
index f3a0f4fa00..788841a7c2 100644
--- a/src/Microsoft.ML.Transforms/PermutationFeatureImportanceExtensions.cs
+++ b/src/Microsoft.ML.Transforms/PermutationFeatureImportanceExtensions.cs
@@ -731,7 +731,7 @@ private static Type GetImplementedIPredictionTransformer(Type type)
                 }
             }
 
-            throw new ArgumentException($"Type IPredictionTransformer not implemented by provided type", nameof(type));
+            throw new ArgumentException($"Type IPredictionTransformer not implemented by provided type, {type}", nameof(type));
         }
 
         #endregion