Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs
===================================================================
diff -u -r0d0fc614ee67c51983412fcec6509f8fad4151e3 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision 0d0fc614ee67c51983412fcec6509f8fad4151e3)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -63,7 +63,7 @@
         /// </summary>
         public ClosingStructuresInput()
         {
-            structureNormalOrientation = new RoundedDouble(2);
+            structureNormalOrientation = new RoundedDouble(2, double.NaN);
             factorStormDurationOpenStructure = new RoundedDouble(2, double.NaN);
             deviationWaveDirection = new RoundedDouble(2, double.NaN);