Index: Ringtoets/Integration/test/Ringtoets.Integration.TestUtil/DataImportHelper.cs
===================================================================
diff -u -r603210e73c97c052ba7fc2447b45cf57750a6ae4 -r9c62dbc3f18cb81172af025c25ef3cc7b5578035
--- Ringtoets/Integration/test/Ringtoets.Integration.TestUtil/DataImportHelper.cs	(.../DataImportHelper.cs)	(revision 603210e73c97c052ba7fc2447b45cf57750a6ae4)
+++ Ringtoets/Integration/test/Ringtoets.Integration.TestUtil/DataImportHelper.cs	(.../DataImportHelper.cs)	(revision 9c62dbc3f18cb81172af025c25ef3cc7b5578035)
@@ -151,7 +151,7 @@
                     else
                     {
                         // Copy same FailureMechanismSection instances to other failure mechanisms
-                        FailureMechanismTestHelper.SetSections(failureMechanism, failureMechanisms[0].Sections.Select(DeepCloneSection).ToList());
+                        FailureMechanismTestHelper.SetSections(failureMechanism, failureMechanisms[0].Sections.Select(DeepCloneSection).ToArray());
                     }
                 }
             }