Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/ImportInfos/ClosingStructuresContextImportInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r16ecec5a2d6f9f48bed7dbe05c5232024b34c286
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/ImportInfos/ClosingStructuresContextImportInfoTest.cs	(.../ClosingStructuresContextImportInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/ImportInfos/ClosingStructuresContextImportInfoTest.cs	(.../ClosingStructuresContextImportInfoTest.cs)	(revision 16ecec5a2d6f9f48bed7dbe05c5232024b34c286)
@@ -115,7 +115,7 @@
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
-            assessmentSection.ReferenceLine = new ReferenceLine();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             mocks.ReplayAll();
 
             var failureMechanism = new ClosingStructuresFailureMechanism();
@@ -166,10 +166,9 @@
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             mocks.ReplayAll();
 
-            assessmentSection.ReferenceLine = new ReferenceLine();
-
             var failureMechanism = new ClosingStructuresFailureMechanism();
             var importTarget = new ClosingStructuresContext(failureMechanism.ClosingStructures, failureMechanism, assessmentSection);
 
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresContextUpdateInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r16ecec5a2d6f9f48bed7dbe05c5232024b34c286
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresContextUpdateInfoTest.cs	(.../ClosingStructuresContextUpdateInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresContextUpdateInfoTest.cs	(.../ClosingStructuresContextUpdateInfoTest.cs)	(revision 16ecec5a2d6f9f48bed7dbe05c5232024b34c286)
@@ -171,10 +171,9 @@
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             mocks.ReplayAll();
-
-            assessmentSection.ReferenceLine = new ReferenceLine();
-
+            
             var failureMechanism = new ClosingStructuresFailureMechanism();
             var structures = new StructureCollection<ClosingStructure>();
 
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresFailureMechanismSectionsContextUpdateInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r16ecec5a2d6f9f48bed7dbe05c5232024b34c286
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresFailureMechanismSectionsContextUpdateInfoTest.cs	(.../ClosingStructuresFailureMechanismSectionsContextUpdateInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Plugin.Test/UpdateInfos/ClosingStructuresFailureMechanismSectionsContextUpdateInfoTest.cs	(.../ClosingStructuresFailureMechanismSectionsContextUpdateInfoTest.cs)	(revision 16ecec5a2d6f9f48bed7dbe05c5232024b34c286)
@@ -162,7 +162,7 @@
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
-            assessmentSection.ReferenceLine = new ReferenceLine();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             mocks.ReplayAll();
 
             var failureMechanism = new ClosingStructuresFailureMechanism();