diff --git a/Demos/Gpu2dDemo/BasicDemo.cpp b/Demos/Gpu2dDemo/BasicDemo.cpp
index 8a1a65ea0..7c3435a34 100644
--- a/Demos/Gpu2dDemo/BasicDemo.cpp
+++ b/Demos/Gpu2dDemo/BasicDemo.cpp
@@ -13,9 +13,10 @@ subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
-//#include "BulletMultiThreaded/btGpuDefines.h"
-//#include "BulletMultiThreaded/btGpuUtilsSharedDefs.h"
-//#include "BulletMultiThreaded/btGpuUtilsSharedCode.h"
+///The 3 following lines include the CPU implementation of the kernels, keep them in this order.
+#include "BulletMultiThreaded/btGpuDefines.h"
+#include "BulletMultiThreaded/btGpuUtilsSharedDefs.h"
+#include "BulletMultiThreaded/btGpuUtilsSharedCode.h"
 
 //----------------------------------------------------------------------------------------
 
diff --git a/src/BulletMultiThreaded/btGpuUtils.cpp b/src/BulletMultiThreaded/btGpuUtils.cpp
deleted file mode 100644
index 4852ff811..000000000
--- a/src/BulletMultiThreaded/btGpuUtils.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
-Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org
-Copyright (C) 2006, 2007 Sony Computer Entertainment Inc. 
-
-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.
-*/
-
-//----------------------------------------------------------------------------------------
-
-#include "btGpuDefines.h"
-#include "btGpuUtilsSharedDefs.h"
-
-//----------------------------------------------------------------------------------------
-
-#include "btGpuUtilsSharedCode.h"
-
-//----------------------------------------------------------------------------------------
-//----------------------------------------------------------------------------------------
-//----------------------------------------------------------------------------------------
-