Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculation.cs
===================================================================
diff -u -rc2694ebe86aef7b8ed7c9dd05a55eec101958a96 -ra9aafffab97152303562110b1d789bacb465ce24
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculation.cs	(.../PipingCalculation.cs)	(revision c2694ebe86aef7b8ed7c9dd05a55eec101958a96)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculation.cs	(.../PipingCalculation.cs)	(revision a9aafffab97152303562110b1d789bacb465ce24)
@@ -22,6 +22,7 @@
 using System;
 using Core.Common.Base;
 using Ringtoets.Common.Data;
+using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Placeholder;
 using Ringtoets.Piping.Data.Properties;