Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs
===================================================================
diff -u -r69c1988e3c492c44148e112151efb3c04a853fcc -rcd3252fb2eb1a9356347ac2e8de46769817a4dda
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriter.cs)	(revision 69c1988e3c492c44148e112151efb3c04a853fcc)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriter.cs)	(revision cd3252fb2eb1a9356347ac2e8de46769817a4dda)
@@ -45,9 +45,7 @@
 
             WriteDikeProfileName(input, writer);
 
-            writer.WriteElementString(
-                ConfigurationSchemaIdentifiers.Orientation,
-                XmlConvert.ToString(input.Orientation));
+            WriteOrientation(input, writer);
 
             WriteDikeHeight(input, writer);
 
@@ -86,6 +84,18 @@
                 input.DikeProfile.Name);
         }
 
+        private static void WriteOrientation(GrassCoverErosionInwardsInput input, XmlWriter writer)
+        {
+            if (input.DikeProfile == null)
+            {
+                return;
+            }
+
+            writer.WriteElementString(
+                ConfigurationSchemaIdentifiers.Orientation,
+                XmlConvert.ToString(input.Orientation));
+        }
+
         private static void WriteDikeHeight(GrassCoverErosionInwardsInput input, XmlWriter writer)
         {
             if (input.DikeProfile == null)