Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs
===================================================================
diff -u -rbe6802ad8677e06b335c8123ec49e7106ad79ad7 -rab20c4eb4ca81bd3845d50210d2bdb301177af6a
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision be6802ad8677e06b335c8123ec49e7106ad79ad7)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision ab20c4eb4ca81bd3845d50210d2bdb301177af6a)
@@ -25,6 +25,7 @@
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.Structures;
 using Ringtoets.HeightStructures.Data.Properties;
 using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
 
@@ -54,7 +55,7 @@
         {
             get
             {
-                return CalculationsGroup.GetCalculations().OfType<HeightStructuresCalculation>();
+                return CalculationsGroup.GetCalculations().OfType<StructuresCalculation<HeightStructuresInput>>();
             }
         }