Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationActivity.cs
===================================================================
diff -u -r388909f5a1af66f32cb70fc094f14dbc9070332b -ra494bde768f1b989d31bff6a801a1816d6f9692e
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationActivity.cs	(.../HeightStructuresCalculationActivity.cs)	(revision 388909f5a1af66f32cb70fc094f14dbc9070332b)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationActivity.cs	(.../HeightStructuresCalculationActivity.cs)	(revision a494bde768f1b989d31bff6a801a1816d6f9692e)
@@ -54,11 +54,6 @@
                                                    IAssessmentSection assessmentSection)
             : base(calculation)
         {
-            if (calculation == null)
-            {
-                throw new ArgumentNullException(nameof(calculation));
-            }
-
             if (hydraulicBoundaryDatabaseFilePath == null)
             {
                 throw new ArgumentNullException(nameof(hydraulicBoundaryDatabaseFilePath));