Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/NormPropertiesIntegrationTest.cs
===================================================================
diff -u -r421965c6cc8249febf0a72677c75d49a39078893 -rafc174f27b49be4208cbc9714b526fc14e8057f3
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/NormPropertiesIntegrationTest.cs	(.../NormPropertiesIntegrationTest.cs)	(revision 421965c6cc8249febf0a72677c75d49a39078893)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/NormPropertiesIntegrationTest.cs	(.../NormPropertiesIntegrationTest.cs)	(revision afc174f27b49be4208cbc9714b526fc14e8057f3)
@@ -173,7 +173,6 @@
             {
                 hydraulicBoundaryLocation
             });
-
             SetOutputToHydraulicBoundaryLocationCalculations(assessmentSection, hydraulicBoundaryLocation, random);
 
             assessmentSection.GrassCoverErosionOutwards.SetHydraulicBoundaryLocationCalculations(new[]
@@ -277,7 +276,8 @@
 
             var mockRepository = new MockRepository();
             AttachObserver(mockRepository, assessmentSection.FailureMechanismContribution);
-            AttachObserver(mockRepository, assessmentSection.HydraulicBoundaryDatabase, false);
+            AttachObserver(mockRepository, assessmentSection, hydraulicBoundaryLocation, false);
+            AttachObserver(mockRepository, assessmentSection.GrassCoverErosionOutwards, hydraulicBoundaryLocation, false);
             AttachObserver(mockRepository, emptyPipingCalculation, false);
             AttachObserver(mockRepository, emptyGrassCoverErosionInwardsCalculation, false);
             AttachObserver(mockRepository, emptyHeightStructuresCalculation, false);