Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/AssessmentSectionTreeNodeInfoTest.cs
===================================================================
diff -u -r1eed3e3f652618c52a462edc502cfd4250772314 -re2e6d944af7b0cea6c9c34e77bd0644149526c37
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/AssessmentSectionTreeNodeInfoTest.cs	(.../AssessmentSectionTreeNodeInfoTest.cs)	(revision 1eed3e3f652618c52a462edc502cfd4250772314)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/AssessmentSectionTreeNodeInfoTest.cs	(.../AssessmentSectionTreeNodeInfoTest.cs)	(revision e2e6d944af7b0cea6c9c34e77bd0644149526c37)
@@ -374,7 +374,7 @@
             mocks.ReplayAll();
 
             var project = new RingtoetsProject();
-            project.Items.Add(assessmentSection);
+            project.AssessmentSections.Add(assessmentSection);
             project.Attach(observerMock);
 
             using (var plugin = new RingtoetsPlugin())
@@ -385,7 +385,7 @@
                 info.OnNodeRemoved(assessmentSection, project);
 
                 // Assert
-                CollectionAssert.DoesNotContain(project.Items, assessmentSection);
+                CollectionAssert.DoesNotContain(project.AssessmentSections, assessmentSection);
             }
             mocks.VerifyAll();
         }