Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/NodePresenters/PipingCalculationContextNodePresenterTest.cs
===================================================================
diff -u -rd6e6eadf4a2521df75b6d371bacbb181a43058a3 -rad6f88d1d7b21f950588f6109b79fe007aab0c9e
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/NodePresenters/PipingCalculationContextNodePresenterTest.cs	(.../PipingCalculationContextNodePresenterTest.cs)	(revision d6e6eadf4a2521df75b6d371bacbb181a43058a3)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/NodePresenters/PipingCalculationContextNodePresenterTest.cs	(.../PipingCalculationContextNodePresenterTest.cs)	(revision ad6f88d1d7b21f950588f6109b79fe007aab0c9e)
@@ -666,7 +666,7 @@
             // Given
             var contextMenuBuilderProviderMock = mockRepository.DynamicMock<IContextMenuBuilderProvider>();
             var observer = mockRepository.StrictMock<IObserver>();
-            observer.Expect(o => o.UpdateObserver()).Repeat.Once();
+            observer.Expect(o => o.UpdateObserver());
             var treeNodeMock = mockRepository.StrictMock<ITreeNode>();
             contextMenuBuilderProviderMock.Expect(cmp => cmp.Get(treeNodeMock)).Return(new CustomItemsOnlyContextMenuBuilder());