Index: src/Common/DelftTools.Utils/Url.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -rd505e5545e25721aee2dfb60bc2a27ab1878a0ad
--- src/Common/DelftTools.Utils/Url.cs	(.../Url.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ src/Common/DelftTools.Utils/Url.cs	(.../Url.cs)	(revision d505e5545e25721aee2dfb60bc2a27ab1878a0ad)
@@ -3,15 +3,14 @@
 using System.Xml.Schema;
 using System.Xml.Serialization;
 using DelftTools.Utils.Aop;
-using DelftTools.Utils.Data;
 
 namespace DelftTools.Utils
 {
     /// <summary>
     /// Web link, url.
     /// </summary>
     [Entity(FireOnCollectionChange = false)]
-    public class Url : Unique<long>, ICloneable, INameable, IXmlSerializable
+    public class Url : ICloneable, INameable, IXmlSerializable
     {
         private string path;