diff --git a/src/collision/narrowphase/SphereVsSphereAlgorithm.cpp.autosave b/src/collision/narrowphase/SphereVsSphereAlgorithm.cpp.autosave
deleted file mode 100644
index a4165d64..00000000
--- a/src/collision/narrowphase/SphereVsSphereAlgorithm.cpp.autosave
+++ /dev/null
@@ -1,81 +0,0 @@
-/********************************************************************************
-* ReactPhysics3D physics library, http://code.google.com/p/reactphysics3d/      *
-* Copyright (c) 2010-2013 Daniel Chappuis                                       *
-*********************************************************************************
-*                                                                               *
-* This software is provided 'as-is', without any express or implied warranty.   *
-* In no event will the authors be held liable for any damages arising from the  *
-* use of this software.                                                         *
-*                                                                               *
-* Permission is granted to anyone to use this software for any purpose,         *
-* including commercial applications, and to alter it and redistribute it        *
-* freely, subject to the following restrictions:                                *
-*                                                                               *
-* 1. The origin of this software must not be misrepresented; you must not claim *
-*    that you wrote the original software. If you use this software in a        *
-*    product, an acknowledgment in the product documentation would be           *
-*    appreciated but is not required.                                           *
-*                                                                               *
-* 2. Altered source versions must be plainly marked as such, and must not be    *
-*    misrepresented as being the original software.                             *
-*                                                                               *
-* 3. This notice may not be removed or altered from any source distribution.    *
-*                                                                               *
-********************************************************************************/
-
-// Libraries
-#include "SphereVsSphereAlgorithm.h"
-#include "../../collision/shapes/SphereShape.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-
-// Constructor
-SphereVsSphereAlgorithm::SphereVsSphereAlgorithm(MemoryAllocator& memoryAllocator)
-                        :NarrowPhaseAlgorithm(memoryAllocator) {
-    
-}
-
-// Destructor
-SphereVsSphereAlgorithm::~SphereVsSphereAlgorithm() {
-    
-}   
-
-bool SphereVsSphereAlgorithm::testCollision(const CollisionShape* collisionShape1,
-                                            const Transform& transform1,
-                                            const CollisionShape* collisionShape2,
-                                            const Transform& transform2,
-                                            ContactPointInfo*& contactInfo) {
-    
-    // Get the sphere collision shapes
-    const SphereShape* sphereShape1 = dynamic_cast<const SphereShape*>(collisionShape1);
-    const SphereShape* sphereShape2 = dynamic_cast<const SphereShape*>(collisionShape2);
-    
-    // Compute the distance between the centers
-    Vector3 vectorBetweenCenters = transform2.getPosition() - transform1.getPosition();
-    decimal squaredDistanceBetweenCenters = vectorBetweenCenters.lengthSquare();
-
-    // Compute the sum of the radius
-    decimal sumRadius = sphereShape1->getRadius() + sphereShape2->getRadius();
-    
-    // If the sphere collision shapes intersect
-    if (squaredDistanceBetweenCenters <= sumRadius * sumRadius) {
-        Vector3 centerSphere2InBody1LocalSpace = transform1.inverse() * transform2.getPosition();
-        Vector3 centerSphere1InBody2LocalSpace = transform2.inverse() * transform1.getPosition();
-        Vector3 intersectionOnBody1 = sphereShape1->getRadius() *
-                                      centerSphere2InBody1LocalSpace.getUnit();
-        Vector3 intersectionOnBody2 = sphereShape2->getRadius() *
-                                      centerSphere1InBody2LocalSpace.getUnit();
-        decimal penetrationDepth = sumRadius - std::sqrt(squaredDistanceBetweenCenters);
-        
-        // Create the contact info object
-        contactInfo = new (mMemoryAllocator.allocate(sizeof(ContactPointInfo))) ContactPointInfo(
-                           vectorBetweenCenters.getUnit(), penetrationDepth,
-                           intersectionOnBody1, intersectionOnBody2);
-    
-        return true;
-    }
-    
-    return false;
-}