diff --git a/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs b/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
index 0a6d6b95a2..0c61d09ce2 100644
--- a/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
+++ b/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
@@ -1967,6 +1967,7 @@ namespace OpenSim.Region.PhysicsModule.ubOde
                 m_terrainHeightsHandler = GCHandle.Alloc(m_terrainHeights, GCHandleType.Pinned);
 
                 m_lastRegionWidth = m_regionWidth;
+                m_lastRegionHeight = m_regionHeight;
 
                 HeightmapData = SafeNativeMethods.GeomOSTerrainDataCreate();
                 SafeNativeMethods.GeomOSTerrainDataBuild(HeightmapData, m_terrainHeightsHandler.AddrOfPinnedObject(), 0, 1.0f,