Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsScenariosContext.cs
===================================================================
diff -u -r650fc7b43cb6729baee51d079f0377df8d7a3de9 -r5906f61fff270a7526253bea07dfecdf680898ed
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsScenariosContext.cs	(.../MacroStabilityInwardsScenariosContext.cs)	(revision 650fc7b43cb6729baee51d079f0377df8d7a3de9)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsScenariosContext.cs	(.../MacroStabilityInwardsScenariosContext.cs)	(revision 5906f61fff270a7526253bea07dfecdf680898ed)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Controls.PresentationObjects;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.MacroStabilityInwards.Data;
@@ -35,9 +36,14 @@
         /// </summary>
         /// <param name="wrappedData">The wrapped <see cref="CalculationGroup"/>.</param>
         /// <param name="failureMechanism">A <see cref="MacroStabilityInwardsFailureMechanism"/> forming the context.</param>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         public MacroStabilityInwardsScenariosContext(CalculationGroup wrappedData, MacroStabilityInwardsFailureMechanism failureMechanism)
             : base(wrappedData)
         {
+            if (failureMechanism == null)
+            {
+                throw new ArgumentNullException(nameof(failureMechanism));
+            }
             ParentFailureMechanism = failureMechanism;
         }