Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs
===================================================================
diff -u -rab20c4eb4ca81bd3845d50210d2bdb301177af6a -r16cb360eae0014270ebb6700054afdbbd565ae65
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision ab20c4eb4ca81bd3845d50210d2bdb301177af6a)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision 16cb360eae0014270ebb6700054afdbbd565ae65)
@@ -198,7 +198,7 @@
         {
             foreach (var calculation in heightStructuresCalculations)
             {
-                new HeightStructuresCalculationService().Validate(calculation, assessmentSection);
+                HeightStructuresCalculationService.Validate(calculation, assessmentSection);
             }
         }
 
@@ -561,7 +561,7 @@
 
             return builder.AddValidateCalculationItem(
                 context,
-                c => new HeightStructuresCalculationService().Validate(c.WrappedData, c.AssessmentSection),
+                c => HeightStructuresCalculationService.Validate(c.WrappedData, c.AssessmentSection),
                 ValidateAllDataAvailableAndGetErrorMessageForCalculation)
                           .AddPerformCalculationItem(calculation, context, Calculate, ValidateAllDataAvailableAndGetErrorMessageForCalculation)
                           .AddClearCalculationOutputItem(calculation)