Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsInputContextProperties.cs
===================================================================
diff -u -r44bce9443701bae546a52fed26327da870c2ab0b -rb116b56a97e5a4aee668e9dda089e8a2e2d45e57
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsInputContextProperties.cs	(.../MacroStabilityInwardsInputContextProperties.cs)	(revision 44bce9443701bae546a52fed26327da870c2ab0b)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsInputContextProperties.cs	(.../MacroStabilityInwardsInputContextProperties.cs)	(revision b116b56a97e5a4aee668e9dda089e8a2e2d45e57)
@@ -93,7 +93,7 @@
                 throw new ArgumentNullException(nameof(getNormativeAssessmentLevelFunc));
             }
 
-            if (this.propertyChangeHandler == null)
+            if (propertyChangeHandler == null)
             {
                 throw new ArgumentNullException(nameof(this.propertyChangeHandler));
             }