Index: Riskeer/DuneErosion/src/Riskeer.DuneErosion.Service/DuneErosionDataSynchronizationService.cs
===================================================================
diff -u -rba5a303ee37cb41bbebf7d24c0ea0a5f544a45b1 -r29286aec576267c6335a76f7fa2aeedfa570ff35
--- Riskeer/DuneErosion/src/Riskeer.DuneErosion.Service/DuneErosionDataSynchronizationService.cs	(.../DuneErosionDataSynchronizationService.cs)	(revision ba5a303ee37cb41bbebf7d24c0ea0a5f544a45b1)
+++ Riskeer/DuneErosion/src/Riskeer.DuneErosion.Service/DuneErosionDataSynchronizationService.cs	(.../DuneErosionDataSynchronizationService.cs)	(revision 29286aec576267c6335a76f7fa2aeedfa570ff35)
@@ -67,7 +67,7 @@
                 return;
             }
 
-            failureMechanism.SetDuneLocations(GetDuneLocationsToSet(hydraulicBoundaryLocations, readDuneLocations));
+            failureMechanism.SetDuneLocations(GetDuneLocationsToSet(hydraulicBoundaryLocations, readDuneLocations).ToList());
         }
 
         /// <summary>