Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs
===================================================================
diff -u -r0a1752d24408af81508bc81d154293be23c9c4ea -r578037b5080f7a4820286ea02c6b4c322a8b1b09
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision 0a1752d24408af81508bc81d154293be23c9c4ea)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision 578037b5080f7a4820286ea02c6b4c322a8b1b09)
@@ -412,7 +412,7 @@
 
             GrassCoverErosionInwardsCalculation calculation = nodeData.WrappedData;
 
-            return builder.AddPerformCalculationItem(calculation, nodeData, PerformCalculation)
+            return builder.AddPerformCalculationItem(calculation, nodeData, PerformCalculation, EnablePerformCalculation)
                           .AddClearCalculationOutputItem(calculation)
                           .AddSeparator()
                           .AddRenameItem()
@@ -428,6 +428,11 @@
                           .Build();
         }
 
+        private bool EnablePerformCalculation(GrassCoverErosionInwardsCalculationContext context)
+        {
+            return context.AssessmentSection.HydraulicBoundaryDatabase != null && context.FailureMechanism.Sections.Any();
+        }
+
         private void PerformCalculation(GrassCoverErosionInwardsCalculation calculation, GrassCoverErosionInwardsCalculationContext context)
         {
             var activity = CreateHydraRingTargetProbabilityCalculationActivity(