Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs
===================================================================
diff -u -r6242 -r6250
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs	(.../CharacteristicPoint.cs)	(revision 6242)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/CharacteristicPoint.cs	(.../CharacteristicPoint.cs)	(revision 6250)
@@ -21,7 +21,6 @@
 
 using System;
 using Deltares.DamEngine.Data.Geometry;
-using Deltares.DamEngine.Data.Standard;
 using Deltares.DamEngine.Data.Standard.Language;
 
 namespace Deltares.DamEngine.Data.Geotechnics;
@@ -71,6 +70,19 @@
     /// 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()
+    {
+        return GetHashCode();
+    }
 
     /// <summary>
     /// Determines whether <see cref="left"/> is equal to <see cref="right"/>.