Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/FailureMechanismSectionsImporterTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r6aa250286440a411e94678f172619986b9b8c2ef
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/FailureMechanismSectionsImporterTest.cs	(.../FailureMechanismSectionsImporterTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/FailureMechanismSectionsImporterTest.cs	(.../FailureMechanismSectionsImporterTest.cs)	(revision 6aa250286440a411e94678f172619986b9b8c2ef)
@@ -742,6 +742,7 @@
 
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             var handler = mocks.Stub<IReferenceLineReplaceHandler>();
             handler.Stub(h => h.ConfirmReplace()).Return(true);
             handler.Stub(h => h.Replace(Arg<IAssessmentSection>.Is.Same(assessmentSection),