Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs
===================================================================
diff -u -r565199265c3608d4242ffeecb4e5ec1731e1dc84 -re3f9dffa91a0def0b6e6bc7dfabef74cc64745c5
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs	(.../TestFailureMechanism.cs)	(revision 565199265c3608d4242ffeecb4e5ec1731e1dc84)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs	(.../TestFailureMechanism.cs)	(revision e3f9dffa91a0def0b6e6bc7dfabef74cc64745c5)
@@ -28,7 +28,7 @@
     public class TestFailureMechanism : FailureMechanismBase, IHasSectionResults<FailureMechanismSectionResult>
     {
         private readonly IList<FailureMechanismSectionResult> sectionResults;
-        private IEnumerable<ICalculation> calculations;
+        private readonly IEnumerable<ICalculation> calculations;
         private static string defaultName = "Test failure mechanism";
         private static string defaultCode = "TFM";