Index: src/Common/SharpMap.Api/Editors/TrackerFeature.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -r0153333b695581ca406c286a27467bc30d7aa5f8
--- src/Common/SharpMap.Api/Editors/TrackerFeature.cs	(.../TrackerFeature.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ src/Common/SharpMap.Api/Editors/TrackerFeature.cs	(.../TrackerFeature.cs)	(revision 0153333b695581ca406c286a27467bc30d7aa5f8)
@@ -1,5 +1,4 @@
 using System.Drawing;
-using DelftTools.Utils.Data;
 using GeoAPI.Extensions.Feature;
 using GeoAPI.Geometries;
 
@@ -14,7 +13,7 @@
     /// eg. LineStringMutator and AllTracker
     /// todo: add support for Trackers that are not represented by a bitmap.
     /// </summary>
-    public class TrackerFeature : Unique<long>, IFeature
+    public class TrackerFeature : IFeature
     {
         private IFeatureInteractor featureInteractor;
         private IGeometry geometry;