Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs
===================================================================
diff -u -rb6a9219d1e628e4430ccf880e8ea390cec04fc04 -rab20c4eb4ca81bd3845d50210d2bdb301177af6a
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision b6a9219d1e628e4430ccf880e8ea390cec04fc04)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision ab20c4eb4ca81bd3845d50210d2bdb301177af6a)
@@ -26,6 +26,7 @@
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.Structures;
 using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
 
 namespace Ringtoets.ClosingStructures.Data
@@ -55,7 +56,7 @@
         {
             get
             {
-                return CalculationsGroup.GetCalculations().OfType<ClosingStructuresCalculation>();
+                return CalculationsGroup.GetCalculations().OfType<StructuresCalculation<ClosingStructuresInput>>();
             }
         }