Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs
===================================================================
diff -u -rb0bb4ef69ff374014ca42601e4f214cdacbe89b5 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs	(.../HeightStructuresInputTest.cs)	(revision b0bb4ef69ff374014ca42601e4f214cdacbe89b5)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs	(.../HeightStructuresInputTest.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -56,7 +56,7 @@
             Assert.IsNull(input.HydraulicBoundaryLocation);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
 
-            AssertAreEqual(0, input.StructureNormalOrientation);
+            AssertAreEqual(double.NaN, input.StructureNormalOrientation);
             Assert.AreEqual(2, input.StructureNormalOrientation.NumberOfDecimalPlaces);
 
             AssertAreEqual(0.05, input.LevelCrestStructure.StandardDeviation);