Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs
===================================================================
diff -u -re2991a38a1982398a6cbb35e38e534e26ba8930d -r1c5621a4920e3d5821ccbf3b5d32a6eeb7658cba
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision e2991a38a1982398a6cbb35e38e534e26ba8930d)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision 1c5621a4920e3d5821ccbf3b5d32a6eeb7658cba)
@@ -129,7 +129,7 @@
                 failureMechanismSection.Name, // TODO: Provide name of reference line instead
                 HydraRingTimeIntegrationSchemeType.FBC,
                 HydraRingUncertaintiesType.All,
-                new OvertoppingCalculationInput(hydraulicBoundaryLocationId, new HydraRingSection(hydraulicBoundaryLocationId, failureMechanismSection.Name, sectionLength, inwardsInput.Orientation),
+                new OvertoppingCalculationInput(hydraulicBoundaryLocationId, new HydraRingSection(1, failureMechanismSection.Name, sectionLength, inwardsInput.Orientation),
                                                 inwardsInput.DikeHeight,
                                                 inwardsInput.CriticalOvertoppingModelFactor,
                                                 inwardsInput.FbFactor.Mean, inwardsInput.FbFactor.StandardDeviation,