Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs
===================================================================
diff -u -raeb6e1a439617630e7613b9ed5af152c345fa2c6 -re14ae58fe3639b6850b6e0bece9bbaa8a6267fdc
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs	(.../GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs)	(revision aeb6e1a439617630e7613b9ed5af152c345fa2c6)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs	(.../GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs)	(revision e14ae58fe3639b6850b6e0bece9bbaa8a6267fdc)
@@ -59,7 +59,7 @@
         {
             get
             {
-                return DikeGeometryHelper.GetRoughnesses(data.WrappedData.DikeGeometry);
+                return DikeGeometryHelper.GetRoughnesses(data.WrappedData.DikeGeometry.ToArray());
             }
         }