diff --git a/sources/reactphysics3d/mathematics/Segment3D.h b/sources/reactphysics3d/mathematics/Segment3D.h
index 79935d52..70ef9144 100644
--- a/sources/reactphysics3d/mathematics/Segment3D.h
+++ b/sources/reactphysics3d/mathematics/Segment3D.h
@@ -49,6 +49,8 @@ class Segment3D {
         void setPointB(const Vector3D& pointB);             // Set the point B
 };
 
+// TODO : Test the Segment3D class
+
 inline Vector3D Segment3D::getPointA() const {
     return pointA;
 }
diff --git a/sources/reactphysics3d/mathematics/mathematics.h b/sources/reactphysics3d/mathematics/mathematics.h
index 8357bad1..0dab9184 100644
--- a/sources/reactphysics3d/mathematics/mathematics.h
+++ b/sources/reactphysics3d/mathematics/mathematics.h
@@ -1,21 +1,21 @@
 /****************************************************************************
- * 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 Lesser 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 Lesser General Public License for more details.                      *
- *                                                                          *
- * You should have received a copy of the GNU Lesser General Public License *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
+* 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 Lesser 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 Lesser General Public License for more details.                      *
+*                                                                          *
+* You should have received a copy of the GNU Lesser General Public License *
+* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
+***************************************************************************/
 
 // TODO : Mathematics library : Check everywhere that in member methods we use attributes access instead of getter and setter.
 
@@ -25,7 +25,9 @@
 // Libraries
 #include "Matrix.h"
 #include "Matrix3x3.h"
+#include "Polygon3D.h"
 #include "Quaternion.h"
+#include "Segment3D.h"
 #include "Vector.h"
 #include "Vector3D.h"
 #include "constants.h"