Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs
===================================================================
diff -u -rcf913a00f5768780ab2f8bd8d5145069581a8068 -r400897d6f2b3e914e5cfc5d0c5a5356e4615eb42
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs	(.../GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs)	(revision cf913a00f5768780ab2f8bd8d5145069581a8068)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs	(.../GrassCoverErosionInwardsInputContextDikeGeometryProperties.cs)	(revision 400897d6f2b3e914e5cfc5d0c5a5356e4615eb42)
@@ -53,20 +53,11 @@
         [TypeConverter(typeof(ExpandableReadOnlyArrayConverter))]
         [ResourcesDisplayName(typeof(Resources), "DikeGeometry_Roughness_DisplayName")]
         [ResourcesDescription(typeof(Resources), "DikeGeometry_Roughness_Description")]
-        public RoundedDouble[] Roughness
+        public RoundedDouble[] Roughnesses
         {
             get
             {
-                var lastPoint = data.WrappedData.DikeGeometry.LastOrDefault();
-                if (lastPoint != null)
-                {
-                    return data.WrappedData.DikeGeometry
-                               .TakeWhile(rp => !ReferenceEquals(rp, lastPoint))
-                               .Select(rp => new RoundedDouble(2, rp.Roughness))
-                               .ToArray();
-                }
-
-                return new RoundedDouble[0];
+                return DikeGeometryHelper.GetRoughnesses(data.WrappedData.DikeGeometry).ToArray();
             }
         }