Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs
===================================================================
diff -u -r3c0603a8b7245c3daafb7ac23911138db9794449 -r5cede57abe00f676961d9642a0f0621aadd9f762
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 3c0603a8b7245c3daafb7ac23911138db9794449)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 5cede57abe00f676961d9642a0f0621aadd9f762)
@@ -25,7 +25,6 @@
 using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Base;
-using Core.Common.Base.Data;
 using Core.Common.Controls.TreeView;
 using Core.Common.Gui;
 using Core.Common.Gui.ContextMenu;
@@ -833,19 +832,20 @@
             {
                 scenario.InputParameters.SynchronizeEntryAndExitPoint();
 
-                var affectedObjects = new List<IObservable>();
+                var affectedObjects = new List<IObservable>
+                {
+                    scenario.InputParameters
+                };
 
-                affectedObjects.Add(scenario.InputParameters);
                 affectedObjects.AddRange(RingtoetsCommonDataSynchronizationService.ClearCalculationOutput(scenario));
 
-
                 foreach (IObservable affectedObject in affectedObjects)
                 {
                     affectedObject.NotifyObservers();
                 }
             }
         }
-        
+
         #endregion
 
         #region PipingCalculationGroupContext TreeNodeInfo