Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingFailureMechanismPropertiesTest.cs
===================================================================
diff -u -r7b2db77245fe1c6f53c3be7b9afda32efbd92732 -r0cb75aafe2dae01db4edda194e0b27da3a0f382f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingFailureMechanismPropertiesTest.cs	(.../PipingFailureMechanismPropertiesTest.cs)	(revision 7b2db77245fe1c6f53c3be7b9afda32efbd92732)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingFailureMechanismPropertiesTest.cs	(.../PipingFailureMechanismPropertiesTest.cs)	(revision 0cb75aafe2dae01db4edda194e0b27da3a0f382f)
@@ -109,11 +109,10 @@
 
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
+            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             var handler = mocks.Stub<IFailureMechanismPropertyChangeHandler<PipingFailureMechanism>>();
             mocks.ReplayAll();
 
-            assessmentSection.ReferenceLine = new ReferenceLine();
-
             // Call
             var properties = new PipingFailureMechanismProperties(failureMechanism, assessmentSection, handler);
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingStochasticSoilModelCollectionContextImportInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r0cb75aafe2dae01db4edda194e0b27da3a0f382f
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingStochasticSoilModelCollectionContextImportInfoTest.cs	(.../PipingStochasticSoilModelCollectionContextImportInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingStochasticSoilModelCollectionContextImportInfoTest.cs	(.../PipingStochasticSoilModelCollectionContextImportInfoTest.cs)	(revision 0cb75aafe2dae01db4edda194e0b27da3a0f382f)
@@ -103,10 +103,9 @@
             // 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 PipingFailureMechanism();
 
             var context = new PipingStochasticSoilModelCollectionContext(failureMechanism.StochasticSoilModels, failureMechanism, assessmentSection);
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingSurfaceLinesContextImportInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r0cb75aafe2dae01db4edda194e0b27da3a0f382f
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingSurfaceLinesContextImportInfoTest.cs	(.../PipingSurfaceLinesContextImportInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ImportInfos/PipingSurfaceLinesContextImportInfoTest.cs	(.../PipingSurfaceLinesContextImportInfoTest.cs)	(revision 0cb75aafe2dae01db4edda194e0b27da3a0f382f)
@@ -104,10 +104,9 @@
             // 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 PipingFailureMechanism();
             var surfaceLines = new PipingSurfaceLineCollection();
 
@@ -219,10 +218,9 @@
             // 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 PipingFailureMechanism();
             var surfaceLines = new PipingSurfaceLineCollection();
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingFailureMechanismSectionsContextUpdateInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r0cb75aafe2dae01db4edda194e0b27da3a0f382f
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingFailureMechanismSectionsContextUpdateInfoTest.cs	(.../PipingFailureMechanismSectionsContextUpdateInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingFailureMechanismSectionsContextUpdateInfoTest.cs	(.../PipingFailureMechanismSectionsContextUpdateInfoTest.cs)	(revision 0cb75aafe2dae01db4edda194e0b27da3a0f382f)
@@ -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 PipingFailureMechanism();
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingSurfaceLinesContextUpdateInfoTest.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -r0cb75aafe2dae01db4edda194e0b27da3a0f382f
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingSurfaceLinesContextUpdateInfoTest.cs	(.../PipingSurfaceLinesContextUpdateInfoTest.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/PipingSurfaceLinesContextUpdateInfoTest.cs	(.../PipingSurfaceLinesContextUpdateInfoTest.cs)	(revision 0cb75aafe2dae01db4edda194e0b27da3a0f382f)
@@ -244,10 +244,9 @@
             // 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 PipingFailureMechanism();
             var surfaceLines = new PipingSurfaceLineCollection();