Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs
===================================================================
diff -u -r286830ea09ca418fba6b5c26f2e52c71f6dd56bd -rfde9fb747c4afe9b3c32a80e1efeef24b535decd
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs	(.../PipingInput.cs)	(revision 286830ea09ca418fba6b5c26f2e52c71f6dd56bd)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs	(.../PipingInput.cs)	(revision fde9fb747c4afe9b3c32a80e1efeef24b535decd)
@@ -282,9 +282,7 @@
             {
                 if (!UseAssessmentLevelManualInput)
                 {
-                    return HydraulicBoundaryLocation != null
-                               ? HydraulicBoundaryLocation.DesignWaterLevel
-                               : new RoundedDouble(2, double.NaN);
+                    return HydraulicBoundaryLocation?.DesignWaterLevel ?? new RoundedDouble(2, double.NaN);
                 }
 
                 return assessmentLevel;