Index: Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/PropertyClasses/WaveConditionsInputContextProperties.cs
===================================================================
diff -u -r998e73d396cfffed52646ecd18dbe8c3eee06497 -r07d1991332e5604dd6fa2f920697f8f3f85987ac
--- Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/PropertyClasses/WaveConditionsInputContextProperties.cs	(.../WaveConditionsInputContextProperties.cs)	(revision 998e73d396cfffed52646ecd18dbe8c3eee06497)
+++ Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/PropertyClasses/WaveConditionsInputContextProperties.cs	(.../WaveConditionsInputContextProperties.cs)	(revision 07d1991332e5604dd6fa2f920697f8f3f85987ac)
@@ -115,7 +115,17 @@
         [ResourcesCategory(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.Categories_HydraulicData))]
         [ResourcesDisplayName(typeof(Resources), nameof(Resources.WaveConditionsInput_CategoryType_DisplayName))]
         [ResourcesDescription(typeof(Resources), nameof(Resources.WaveConditionsInput_CategoryType_Description))]
-        public abstract TCategory CategoryType { get; set; }
+        public TCategory CategoryType
+        {
+            get
+            {
+                return GetCategoryType();
+            }
+            set
+            {
+                PropertyChangeHelper.ChangePropertyAndNotify(() => SetCategoryType(value), propertyChangeHandler);
+            }
+        }
 
         [PropertyOrder(assessmentLevelPropertyIndex)]
         [ResourcesCategory(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.Categories_HydraulicData))]
@@ -349,5 +359,17 @@
             return SelectableHydraulicBoundaryLocationHelper.GetSortedSelectableHydraulicBoundaryLocations(
                 data.HydraulicBoundaryLocations, referenceLocation);
         }
+
+        /// <summary>
+        /// Gets the category type that is set to the wave conditions input.
+        /// </summary>
+        /// <returns>The category type at stake.</returns>
+        protected abstract TCategory GetCategoryType();
+
+        /// <summary>
+        /// Sets the provided category type to the wave conditions input.
+        /// </summary>
+        /// <param name="categoryType">The category type to set.</param>
+        protected abstract void SetCategoryType(TCategory categoryType);
     }
 }
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