diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
index f833d54943..741f8dbf1d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
@@ -658,7 +658,7 @@ private sealed class BulletConstraintXNA : BulletConstraint
         IndexedVector3 frame2v = new IndexedVector3(pframe2.X, pframe2.Y, pframe2.Z);
         IndexedQuaternion frame2rot = new IndexedQuaternion(pframe2rot.X, pframe2rot.Y, pframe2rot.Z, pframe2rot.W);
         IndexedMatrix frame2 = IndexedMatrix.CreateFromQuaternion(frame2rot);
-        frame2._origin = frame1v;
+        frame2._origin = frame2v;
         constraint.SetFrames(ref frame1, ref frame2);
         return true;
     }