1 files changed, 1 insertions, 1 deletions

diff --git a/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs b/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
index 9c7b2fa..c832520 100644
--- a/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
+++ b/OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
@@ -84,7 +84,7 @@ namespace OpenSim.Region.CoreModules.World.Terrain
         private ITerrainChannel m_revert;
         private Scene m_scene;
         private volatile bool m_tainted;
-        private readonly UndoStack<LandUndoState> m_undo = new UndoStack<LandUndoState>(5);
+        private readonly Stack<LandUndoState> m_undo = new Stack<LandUndoState>(5);
 
         #region ICommandableModule Members