diff --git a/Assets/VRTK/Scripts/VRTK_PlayerPresence.cs b/Assets/VRTK/Scripts/VRTK_PlayerPresence.cs
index 5f2fcc600..54c4abfc7 100644
--- a/Assets/VRTK/Scripts/VRTK_PlayerPresence.cs
+++ b/Assets/VRTK/Scripts/VRTK_PlayerPresence.cs
@@ -297,7 +297,7 @@ private void DisablePhysics()
         private void UpdateCollider()
         {
             var playAreaHeightAdjustment = 0.009f;
-            var newpresenceColliderYSize = (headset.transform.localPosition.y - headsetYOffset) - transform.localPosition.y;
+            var newpresenceColliderYSize = (headset.transform.localPosition.y - headsetYOffset);
             var newpresenceColliderYCenter = (newpresenceColliderYSize != 0 ? (newpresenceColliderYSize / 2) + playAreaHeightAdjustment : 0);
 
             if (presenceCollider)