diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index c7d21bba90..6f68029220 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -2174,6 +2174,7 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     m_rootPart.UpdateFlag = 1;
                     lastPhysGroupPos = AbsolutePosition;
+                    UpdateSitters();
                 }
 
                 if (UsePhysics && !GroupRotation.ApproxEquals(lastPhysGroupRot, 0.1f))
@@ -3832,6 +3833,14 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
         
+        private void UpdateSitters()
+        {
+            foreach (SceneObjectPart part in Children.Values)
+            {
+                part.UpdateSitter();
+            }
+        }
+        
         public override string ToString()
         {
             return String.Format("{0} {1} ({2})", Name, UUID, AbsolutePosition);
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index e4a36efb76..705e0a3adc 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -4720,5 +4720,13 @@ namespace OpenSim.Region.Framework.Scenes
                 Inventory.UpdateInventoryItem(item);
             }
         }
+
+        public void UpdateSitter()
+        {
+            if (m_sitTargetAvatar != UUID.Zero)
+                return;
+
+            // Update sitting avatar chat position
+        }
     }
 }