diff --git a/sources/reactphysics3d/Quaternion.cpp b/sources/reactphysics3d/Quaternion.cpp
deleted file mode 100755
index 32453c90..00000000
--- a/sources/reactphysics3d/Quaternion.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/****************************************************************************
- * Copyright (C) 2009      Daniel Chappuis                                  *
- ****************************************************************************
- * This file is part of ReactPhysics3D.                                     *
- *                                                                          *
- * ReactPhysics3D is free software: you can redistribute it and/or modify   *
- * it under the terms of the GNU General Public License as published by     *
- * the Free Software Foundation, either version 3 of the License, or        *
- * (at your option) any later version.                                      *
- *                                                                          *
- * ReactPhysics3D is distributed in the hope that it will be useful,        *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
- * GNU General Public License for more details.                             *
- *                                                                          *
- * You should have received a copy of the GNU General Public License        *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
-
-// Libraries
-#include "Quaternion.h"
-
-// Namespaces
-using namespace reactphysics3d;
-
-// Constructor of the class
-Quaternion::Quaternion()
-           :x(0.0), y(0.0), z(0.0), w(0.0) {
-
-}
-
-// Constructor with arguments
-Quaternion::Quaternion(double x, double y, double z, double w)
-           :x(x), y(y), z(z), w(w) {
-
-}
-
-// Constructor with the component w and the vector v=(x y z)
-Quaternion::Quaternion(double w, const Vector3D& v)
-           :x(v.getX()), y(v.getY()), z(v.getZ()), w(w) {
-
-}
-
-// Copy-constructor
-Quaternion::Quaternion(const Quaternion& quaternion)
-           :x(quaternion.x), y(quaternion.y), z(quaternion.z), w(quaternion.w) {
-
-}
-
-// Destructor
-Quaternion::~Quaternion() {
-
-}
-
-