diff --git a/csharp/ql/test/utils/model-generator/dataflow/NoSummaries.cs b/csharp/ql/test/utils/model-generator/dataflow/NoSummaries.cs
index 112857f504e..b2c21b57917 100644
--- a/csharp/ql/test/utils/model-generator/dataflow/NoSummaries.cs
+++ b/csharp/ql/test/utils/model-generator/dataflow/NoSummaries.cs
@@ -131,4 +131,15 @@ public class CollectionFlow
     {
         return a;
     }
-}
\ No newline at end of file
+}
+
+// A neutral model should not be created for a parameterless constructor.
+public class ParameterlessConstructor
+{
+    public bool IsInitialized;
+
+    public ParameterlessConstructor()
+    {
+        IsInitialized = true;
+    }
+}