Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs
===================================================================
diff -u -re4f43547afaab47559c5aa667b1aac661a0d1a8b -r16cb360eae0014270ebb6700054afdbbd565ae65
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs	(.../StabilityStoneCoverWaveConditionsCalculationService.cs)	(revision e4f43547afaab47559c5aa667b1aac661a0d1a8b)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs	(.../StabilityStoneCoverWaveConditionsCalculationService.cs)	(revision 16cb360eae0014270ebb6700054afdbbd565ae65)
@@ -46,7 +46,7 @@
         /// <param name="calculation">The <see cref="StabilityStoneCoverWaveConditionsCalculation"/> for which to validate the values.</param>
         /// <param name="hydraulicBoundaryDatabaseFilePath">The file path of the hydraulic boundary database file which to validate.</param>
         /// <returns><c>True</c>c> if there were no validation errors; <c>False</c>c> otherwise.</returns>
-        public bool Validate(StabilityStoneCoverWaveConditionsCalculation calculation, string hydraulicBoundaryDatabaseFilePath)
+        public static bool Validate(StabilityStoneCoverWaveConditionsCalculation calculation, string hydraulicBoundaryDatabaseFilePath)
         {
             return ValidateWaveConditionsInput(
                 calculation.InputParameters,