diff --git a/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs b/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs
index 56a666a699..a439cc0dcc 100755
--- a/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs
@@ -1882,7 +1882,7 @@ 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;
 
             constrain = new Generic6DofSpringConstraint(body1, body2, ref frame1, ref frame2, puseLinearReferenceFrameA);
             world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
@@ -1932,7 +1932,7 @@ 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;
 
             constrain = new SliderConstraint(rb1, rb2, ref frame1, ref frame2, puseLinearReferenceFrameA);
             world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
@@ -1959,7 +1959,7 @@ 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;
 
             constrain = new ConeTwistConstraint(rb1, rb2, ref frame1, ref frame2);
             world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);