Index: Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs
===================================================================
diff -u -re182f6f394aa75e739467a77e7bcacd9a8b25429 -r0ac76fb7136fab0ad924586e2dcd3437f4977d78
--- Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs	(.../WaveConditionsInput.cs)	(revision e182f6f394aa75e739467a77e7bcacd9a8b25429)
+++ Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs	(.../WaveConditionsInput.cs)	(revision 0ac76fb7136fab0ad924586e2dcd3437f4977d78)
@@ -52,7 +52,7 @@
         /// </summary>
         public WaveConditionsInput()
         {
-            orientation = new RoundedDouble(2);
+            orientation = new RoundedDouble(2, double.NaN);
 
             upperBoundaryRevetment = new RoundedDouble(2, double.NaN);
             lowerBoundaryRevetment = new RoundedDouble(2, double.NaN);
@@ -347,7 +347,6 @@
         {
             if (foreshoreProfile == null)
             {
-                Orientation = RoundedDouble.NaN;
                 UseForeshore = false;
                 UseBreakWater = false;
                 BreakWater = GetDefaultBreakWater();
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs
===================================================================
diff -u -r19db52c6c2776ade0a18342b78f1d64f809ce9d7 -r0ac76fb7136fab0ad924586e2dcd3437f4977d78
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs	(.../WaveConditionsInputTest.cs)	(revision 19db52c6c2776ade0a18342b78f1d64f809ce9d7)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs	(.../WaveConditionsInputTest.cs)	(revision 0ac76fb7136fab0ad924586e2dcd3437f4977d78)
@@ -268,7 +268,7 @@
             Assert.IsFalse(input.UseForeshore);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
             Assert.AreEqual(originalHydraulicBoundaryLocation, input.HydraulicBoundaryLocation);
-            Assert.IsNaN(input.Orientation);
+            Assert.AreEqual(foreshoreProfile.Orientation, input.Orientation, input.Orientation.GetAccuracy());
             Assert.AreEqual(2, input.Orientation.NumberOfDecimalPlaces);
         }