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diff --git a/raul/SharedPtr.h b/raul/SharedPtr.h
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+/* A Reference Counting Smart Pointer.
+ * Copyright (C) 2006 Dave Robillard.
+ * 
+ * This 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 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * This file 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 details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_SHARED_PTR_H
+#define RAUL_SHARED_PTR_H
+
+#include <cassert>
+#include <cstddef>
+
+#ifdef BOOST_SP_ENABLE_DEBUG_HOOKS
+#include <iostream>
+#include <list>
+#include <algorithm>
+
+static std::list<void*> shared_ptr_counters;
+
+// Use debug hooks to ensure 2 shared_ptrs never point to the same thing
+namespace boost {
+	
+	inline void sp_scalar_constructor_hook(void* object, unsigned long cnt, void* ptr) {
+		assert(std::find(shared_ptr_counters.begin(), shared_ptr_counters.end(),
+				(void*)object) == shared_ptr_counters.end());
+		shared_ptr_counters.push_back(object);
+		//std::cerr << "Creating SharedPtr to "
+		//	<< object << ", count = " << cnt << std::endl;
+	}
+	
+	inline void sp_scalar_destructor_hook(void* object, unsigned long cnt, void* ptr) {
+		shared_ptr_counters.remove(object);
+		//std::cerr << "Destroying SharedPtr to "
+		//	<< object << ", count = " << cnt << std::endl;
+	}
+
+}
+#endif // BOOST_SP_ENABLE_DEBUG_HOOKS
+
+
+#include <boost/shared_ptr.hpp>
+
+#define SharedPtr boost::shared_ptr
+#define PtrCast   boost::dynamic_pointer_cast
+
+#endif // RAUL_SHARED_PTR_H
+