diff --git a/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs b/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
index 292a5c6c7d..5f6b4d7240 100644
--- a/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
@@ -821,7 +821,7 @@ namespace OpenSim.Region.Environment.Scenes
                                         );
             }
 
-            set { m_sitTargetOrientation = new Quaternion(value.W, value.X, value.Y, value.Z); }
+            set { m_sitTargetOrientation = new Quaternion(value.X, value.Y, value.Z, value.W); }
         }
 
         public bool Stopped