diff --git a/libraries/physics/src/CharacterController.cpp b/libraries/physics/src/CharacterController.cpp
index ba3a3de069..a796ea28a0 100755
--- a/libraries/physics/src/CharacterController.cpp
+++ b/libraries/physics/src/CharacterController.cpp
@@ -189,7 +189,7 @@ void CharacterController::addToWorld() {
     _rigidBody->setCollisionFlags(btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
 
     // enable CCD
-    _rigidBody->setCcdSweptSphereRadius(2.0f * (_radius + _halfHeight));
+    _rigidBody->setCcdSweptSphereRadius(_halfHeight);
     _rigidBody->setCcdMotionThreshold(_radius);
 
     btCollisionShape* shape = _rigidBody->getCollisionShape();
@@ -556,7 +556,7 @@ void CharacterController::setLocalBoundingBox(const glm::vec3& minCorner, const
 
     if (_rigidBody) {
         // update CCD with new _radius
-        _rigidBody->setCcdSweptSphereRadius(2.0f * (_radius + _halfHeight));
+        _rigidBody->setCcdSweptSphereRadius(_halfHeight);
         _rigidBody->setCcdMotionThreshold(_radius);
     }
 }