Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs
===================================================================
diff -u -re0daf026606d3c52665d1574fb0f0f69d10edec7 -rfb56223ca025d6d517e102efd8141b9e5e28ca7b
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision e0daf026606d3c52665d1574fb0f0f69d10edec7)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision fb56223ca025d6d517e102efd8141b9e5e28ca7b)
@@ -46,7 +46,7 @@
         /// Initializes a new instance of the <see cref="ClosingStructuresFailureMechanism"/> class.
         /// </summary>
         public ClosingStructuresFailureMechanism()
-            : base(Resources.ClosingStructuresFailureMechanism_DisplayName, Resources.ClosingStructuresFailureMechanism_Code)
+            : base(Resources.ClosingStructuresFailureMechanism_DisplayName, Resources.ClosingStructuresFailureMechanism_Code, 1)
         {
             CalculationsGroup = new CalculationGroup
             {
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresFailureMechanismTest.cs
===================================================================
diff -u -rfc8446fc65eb82bb381278d8a94fd061e6278bbe -rfb56223ca025d6d517e102efd8141b9e5e28ca7b
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresFailureMechanismTest.cs	(.../ClosingStructuresFailureMechanismTest.cs)	(revision fc8446fc65eb82bb381278d8a94fd061e6278bbe)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresFailureMechanismTest.cs	(.../ClosingStructuresFailureMechanismTest.cs)	(revision fb56223ca025d6d517e102efd8141b9e5e28ca7b)
@@ -45,6 +45,7 @@
             Assert.IsInstanceOf<IHasSectionResults<ClosingStructuresFailureMechanismSectionResult>>(failureMechanism);
             Assert.AreEqual("Kunstwerken - Betrouwbaarheid sluiting kunstwerk", failureMechanism.Name);
             Assert.AreEqual("BSKW", failureMechanism.Code);
+            Assert.AreEqual(1, failureMechanism.AssemblyGroup);
 
             Assert.IsInstanceOf<GeneralClosingStructuresInput>(failureMechanism.GeneralInput);