Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/DikeProfileDikeGeometryProperties.cs
===================================================================
diff -u -re039612b6aedef09462b8f260b2f377483d4ea65 -r04d96e936610eab56e9ddc09c055526efe9b9652
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/DikeProfileDikeGeometryProperties.cs	(.../DikeProfileDikeGeometryProperties.cs)	(revision e039612b6aedef09462b8f260b2f377483d4ea65)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/DikeProfileDikeGeometryProperties.cs	(.../DikeProfileDikeGeometryProperties.cs)	(revision 04d96e936610eab56e9ddc09c055526efe9b9652)
@@ -57,7 +57,7 @@
         {
             get
             {
-                return DikeGeometryHelper.GetRoughnesses(data.DikeGeometry);
+                return DikeGeometryHelper.GetRoughnesses(data.DikeGeometry.ToArray());
             }
         }