Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsView.cs
===================================================================
diff -u -r24942d5d831cb0d67336dd9d5506a4a23cf099f5 -r948bc61d0095021cfad938557c5b98f00a150044
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsView.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelLocationsView.cs)	(revision 24942d5d831cb0d67336dd9d5506a4a23cf099f5)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsView.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelLocationsView.cs)	(revision 948bc61d0095021cfad938557c5b98f00a150044)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Base;
 using Ringtoets.Common.Data.AssessmentSection;
@@ -113,8 +114,7 @@
 
             CalculationGuiService.CalculateDesignWaterLevels(AssessmentSection.HydraulicBoundaryDatabase.FilePath,
                                                              AssessmentSection.HydraulicBoundaryDatabase.EffectivePreprocessorDirectory(),
-                                                             locations,
-                                                             GetCalculationFunc,
+                                                             locations.Select(l => GetCalculationFunc(l)),
                                                              mechanismSpecificNorm,
                                                              messageProvider);
         }