Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs
===================================================================
diff -u -r6235 -r6236
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs	(.../CharacteristicPoint.cs)	(revision 6235)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs	(.../CharacteristicPoint.cs)	(revision 6236)
@@ -21,6 +21,7 @@
 
 using System;
 using Deltares.DamEngine.Data.Geometry;
+using Deltares.DamEngine.Data.Standard;
 using Deltares.DamEngine.Data.Standard.Language;
 
 namespace Deltares.DamEngine.Data.Geotechnics;
@@ -70,7 +71,21 @@
     /// Gets or sets the characteristic point set associated containing this point.
     /// </summary>
     public CharacteristicPointSet PointSet { get; set; }
+    
+    public override bool Equals(object obj)
+    {
+        var a = obj as CharacteristicPoint;
+        if (a == null)
+            return false;
+        return this == a;
+    }
 
+    public override int GetHashCode()
+    {
+        var comparer = new ReferenceEqualityComparer();
+        return comparer.GetHashCode(typeof(CharacteristicPoint));
+    }
+
     /// <summary>
     /// Determines whether <see cref="left"/> is equal to <see cref="right"/>.
     /// </summary>