Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Activities/HydraRingActivityBase.cs
===================================================================
diff -u -r1b0460d5f81926d0366ab10e4b0e9f6d75809c71 -re69acb9595f7bf1d202ddd1fb51934b66768b75d
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Activities/HydraRingActivityBase.cs	(.../HydraRingActivityBase.cs)	(revision 1b0460d5f81926d0366ab10e4b0e9f6d75809c71)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Activities/HydraRingActivityBase.cs	(.../HydraRingActivityBase.cs)	(revision e69acb9595f7bf1d202ddd1fb51934b66768b75d)
@@ -20,7 +20,6 @@
 // All rights reserved.
 
 using Core.Common.Base.Service;
-using Ringtoets.HydraRing.Calculation.Services;
 
 namespace Ringtoets.HydraRing.Calculation.Activities
 {
@@ -29,11 +28,6 @@
     /// </summary>
     public abstract class HydraRingActivityBase : Activity
     {
-        protected override void OnCancel()
-        {
-            HydraRingCalculationService.CancelRunningCalculation();
-        }
-
         protected override void OnRun()
         {
             if (!Validate())