Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs
===================================================================
diff -u -r1fc8bda15c287de13ee83b96004e4d28c8ae54d8 -r7618e47c7ff0d09102d56e2c25545f57a4269352
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 1fc8bda15c287de13ee83b96004e4d28c8ae54d8)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 7618e47c7ff0d09102d56e2c25545f57a4269352)
@@ -1473,7 +1473,7 @@
 
         private static void ClearCalculations(IAssessmentSection nodeData)
         {
-            var affectedCalculations = new List<ICalculation>();
+            var affectedCalculations = new List<IObservable>();
             affectedCalculations.AddRange(RingtoetsDataSynchronizationService.ClearAllCalculationOutputAndHydraulicBoundaryLocations(nodeData));
             affectedCalculations.ForEachElementDo(ac => ac.NotifyObservers());