diff --git a/include/turtle/detail/sequence_impl.hpp b/include/turtle/detail/sequence_impl.hpp
index ac40080..c7d3ce6 100644
--- a/include/turtle/detail/sequence_impl.hpp
+++ b/include/turtle/detail/sequence_impl.hpp
@@ -12,7 +12,7 @@
 #include "../config.hpp"
 #include "mutex.hpp"
 #include <boost/noncopyable.hpp>
-#include <boost/shared_ptr.hpp>
+#include <boost/make_shared.hpp>
 #include <algorithm>
 #include <vector>
 
@@ -23,8 +23,10 @@ namespace detail
     class sequence_impl : private boost::noncopyable
     {
     public:
-        sequence_impl() : mutex_( boost::make_shared< mutex >() ) {}
-        
+        sequence_impl()
+            : mutex_( boost::make_shared< mutex >() )
+        {}
+
         void add( void* e )
         {
             lock _( mutex_ );
@@ -57,7 +59,6 @@ namespace detail
         typedef std::vector< void* > elements_type;
 
         elements_type elements_;
-        
         const boost::shared_ptr< mutex > mutex_;
     };
 }
diff --git a/include/turtle/sequence.hpp b/include/turtle/sequence.hpp
index 051d219..28a2ee9 100644
--- a/include/turtle/sequence.hpp
+++ b/include/turtle/sequence.hpp
@@ -10,7 +10,6 @@
 #define MOCK_SEQUENCE_HPP_INCLUDED
 
 #include "config.hpp"
-#include <boost/make_shared.hpp>
 #include "detail/sequence_impl.hpp"
 
 namespace mock