Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsApplicationPlugin.cs
===================================================================
diff -u -r8b5a6f938fe2b04cd78623649df37580e145055f -r3434a272cc8bfb25dae4bd7bd50afedb377343c0
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsApplicationPlugin.cs	(.../RingtoetsApplicationPlugin.cs)	(revision 8b5a6f938fe2b04cd78623649df37580e145055f)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsApplicationPlugin.cs	(.../RingtoetsApplicationPlugin.cs)	(revision 3434a272cc8bfb25dae4bd7bd50afedb377343c0)
@@ -66,7 +66,7 @@
 
         private static string GetUniqueForAssessmentSectionName(Project project, string baseName)
         {
-            return NamingHelper.GetUniqueName(project.Items.OfType<AssessmentSectionBase>(), baseName, a => a.Name);
+            return NamingHelper.GetUniqueName(project.Items.OfType<IAssessmentSection>(), baseName, a => a.Name);
         }
     }
 }
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