Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextProperties.cs
===================================================================
diff -u -r6c3a074511922fb175a1aa7f20168bbb6d63a688 -rb0b6b4fe952844ddc3e253e6f88a6cccc97dc71f
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextProperties.cs	(.../StabilityStoneCoverWaveConditionsCalculationInputContextProperties.cs)	(revision 6c3a074511922fb175a1aa7f20168bbb6d63a688)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextProperties.cs	(.../StabilityStoneCoverWaveConditionsCalculationInputContextProperties.cs)	(revision b0b6b4fe952844ddc3e253e6f88a6cccc97dc71f)
@@ -192,7 +192,7 @@
         }
 
         [PropertyOrder(waterLevelsPropertyIndex)]
-        [TypeConverter(typeof(ExpandableArrayConverter))]
+        [TypeConverter(typeof(ExpandableReadOnlyArrayConverter))]
         [ResourcesCategory(typeof(RingtoetsCommonFormsResources), "Categories_HydraulicData")]
         [ResourcesDisplayName(typeof(Resources), "StabilityStoneCoverWaveConditionsCalculationInput_WaterLevels_DisplayName")]
         [ResourcesDescription(typeof(Resources), "StabilityStoneCoverWaveConditionsCalculationInput_WaterLevels_Description")]
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextPropertiesTest.cs
===================================================================
diff -u -r3141c8fa25ba463ecc276c79d3f0b3a340e1a9c3 -rb0b6b4fe952844ddc3e253e6f88a6cccc97dc71f
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsCalculationInputContextPropertiesTest.cs)	(revision 3141c8fa25ba463ecc276c79d3f0b3a340e1a9c3)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsCalculationInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsCalculationInputContextPropertiesTest.cs)	(revision b0b6b4fe952844ddc3e253e6f88a6cccc97dc71f)
@@ -360,7 +360,7 @@
 
             PropertyDescriptor waterLevelsProperty = dynamicProperties[waterLevelsPropertyIndex];
             Assert.IsNotNull(waterLevelsProperty);
-            Assert.IsInstanceOf<ExpandableArrayConverter>(waterLevelsProperty.Converter);
+            Assert.IsInstanceOf<ExpandableReadOnlyArrayConverter>(waterLevelsProperty.Converter);
             Assert.IsTrue(waterLevelsProperty.IsReadOnly);
             Assert.AreEqual(hydraulicParametersCategory, waterLevelsProperty.Category);
             Assert.AreEqual("Waterstanden in berekening [m+NAP]", waterLevelsProperty.DisplayName);