Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/ObservableTestAssessmentSectionStub.cs
===================================================================
diff -u -r000b675444761bd16bc9aa7860c2af198b705bb0 -r3014d0ced22c45300938639e7958ea0850485240
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/ObservableTestAssessmentSectionStub.cs	(.../ObservableTestAssessmentSectionStub.cs)	(revision 000b675444761bd16bc9aa7860c2af198b705bb0)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/ObservableTestAssessmentSectionStub.cs	(.../ObservableTestAssessmentSectionStub.cs)	(revision 3014d0ced22c45300938639e7958ea0850485240)
@@ -40,6 +40,7 @@
         public ObservableTestAssessmentSectionStub()
         {
             FailureMechanismContribution = new FailureMechanismContribution(Enumerable.Empty<IFailureMechanism>(), 0, 1.0/300000);
+            BackgroundMapData = new BackgroundMapDataContainer();
         }
 
         public string Id { get; }
@@ -49,7 +50,7 @@
         public ReferenceLine ReferenceLine { get; set; }
         public FailureMechanismContribution FailureMechanismContribution { get; }
         public HydraulicBoundaryDatabase HydraulicBoundaryDatabase { get; set; }
-        public WmtsMapData BackgroundMapData { get; set; }
+        public BackgroundMapDataContainer BackgroundMapData { get; }
 
         public IEnumerable<IFailureMechanism> GetFailureMechanisms()
         {