Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryLocationPropertiesTest.cs
===================================================================
diff -u -r2b62d771a30ac4a3a59b52efc9df88afbc6663b2 -rc5ac6656bddb53b9a1ec2edd5ca2f19c5b7d8e80
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryLocationPropertiesTest.cs	(.../HydraulicBoundaryLocationPropertiesTest.cs)	(revision 2b62d771a30ac4a3a59b52efc9df88afbc6663b2)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryLocationPropertiesTest.cs	(.../HydraulicBoundaryLocationPropertiesTest.cs)	(revision c5ac6656bddb53b9a1ec2edd5ca2f19c5b7d8e80)
@@ -155,14 +155,18 @@
                                                                             true);
 
             TestHelper.AssertTypeConverter<HydraulicBoundaryLocationProperties, KeyValueExpandableArrayConverter>(nameof(HydraulicBoundaryLocationProperties.AlphaValues));
-            PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(dynamicProperties[4],
+            PropertyDescriptor alphaValuesProperty = dynamicProperties[4];
+            Assert.NotNull(alphaValuesProperty.Attributes[typeof(KeyValueElementAttribute)]);
+            PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(alphaValuesProperty,
                                                                             illustrationPointsCategory,
                                                                             "Alfa's",
                                                                             "Berekende invloedscoëfficiënten voor alle beschouwde stochasten.",
                                                                             true);
 
             TestHelper.AssertTypeConverter<HydraulicBoundaryLocationProperties, KeyValueExpandableArrayConverter>(nameof(HydraulicBoundaryLocationProperties.Durations));
-            PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(dynamicProperties[5],
+            PropertyDescriptor durationsProperty = dynamicProperties[5];
+            Assert.NotNull(durationsProperty.Attributes[typeof(KeyValueElementAttribute)]);
+            PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(durationsProperty,
                                                                             illustrationPointsCategory,
                                                                             "Tijdsduren",
                                                                             "Tijdsduren waarop de stochasten betrekking hebben.",