Index: src/Common/SharpMap/Map/Map.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -rd505e5545e25721aee2dfb60bc2a27ab1878a0ad
--- src/Common/SharpMap/Map/Map.cs	(.../Map.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ src/Common/SharpMap/Map/Map.cs	(.../Map.cs)	(revision d505e5545e25721aee2dfb60bc2a27ab1878a0ad)
@@ -26,7 +26,6 @@
 using DelftTools.Utils.Aop;
 using DelftTools.Utils.Collections;
 using DelftTools.Utils.Collections.Generic;
-using DelftTools.Utils.Data;
 using DelftTools.Utils.Diagnostics;
 using GeoAPI.CoordinateSystems;
 using GeoAPI.Extensions.Feature;
@@ -82,7 +81,7 @@
     /// </example>
     [Entity(FireOnCollectionChange=false)]
     //[Serializable]
-    public class Map : Unique<long>, IDisposable, INotifyCollectionChange, IMap
+    public class Map : IDisposable, INotifyCollectionChange, IMap
     {
         private static readonly ILog log = LogManager.GetLogger(typeof(Map));