Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Service/GrassCoverErosionInwardsCalculationService.cs
===================================================================
diff -u -ra9de6c776f0a8367193b3ac142d784979bb3766a -r82136d8f4a3bb2c3a7669e788b62a1578e82c1f2
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Service/GrassCoverErosionInwardsCalculationService.cs	(.../GrassCoverErosionInwardsCalculationService.cs)	(revision a9de6c776f0a8367193b3ac142d784979bb3766a)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Service/GrassCoverErosionInwardsCalculationService.cs	(.../GrassCoverErosionInwardsCalculationService.cs)	(revision 82136d8f4a3bb2c3a7669e788b62a1578e82c1f2)
@@ -130,6 +130,11 @@
 
             var validationProblem = HydraulicDatabaseHelper.ValidatePathForCalculation(assessmentSection.HydraulicBoundaryDatabase.FilePath);
 
+            if (inputParameters.DikeProfile == null)
+            {
+                validationResult.Add(RingtoetsCommonServiceResources.CalculationService_ValidateInput_No_dike_profile_selected);
+            }
+
             if (!string.IsNullOrEmpty(validationProblem))
             {
                 validationResult.Add(validationProblem);