Index: Ringtoets/Common/src/Ringtoets.Common.Service/HydraRingInputParser.cs
===================================================================
diff -u -r156b46b92a4beaf22dc59e628db19be5536468fc -r83ac738ad69ef53eba6ca4f647657e5b7f024b96
--- Ringtoets/Common/src/Ringtoets.Common.Service/HydraRingInputParser.cs	(.../HydraRingInputParser.cs)	(revision 156b46b92a4beaf22dc59e628db19be5536468fc)
+++ Ringtoets/Common/src/Ringtoets.Common.Service/HydraRingInputParser.cs	(.../HydraRingInputParser.cs)	(revision 83ac738ad69ef53eba6ca4f647657e5b7f024b96)
@@ -42,7 +42,7 @@
         /// <returns>A <see cref="IEnumerable{T}"/> of <see cref="HydraRingForelandPoint"/>.</returns>
         public static IEnumerable<HydraRingForelandPoint> ParseForeshore(IUseForeshore input)
         {
-            return input.UseForeshore ? input.ForeshoreGeometry.Select(c => new HydraRingForelandPoint(c.X, c.Y)) : new HydraRingForelandPoint[0];
+            return input.UseForeshore ? input.ForeshoreGeometry.Select(c => new HydraRingForelandPoint(c.X, c.Y)).ToArray() : new HydraRingForelandPoint[0];
         }
 
         /// <summary>