diff --git a/include/boost/iterator/is_lvalue_iterator.hpp b/include/boost/iterator/is_lvalue_iterator.hpp
index 26ee9d2..a4c2eab 100644
--- a/include/boost/iterator/is_lvalue_iterator.hpp
+++ b/include/boost/iterator/is_lvalue_iterator.hpp
@@ -11,7 +11,7 @@
 
 #include <boost/type_traits/add_lvalue_reference.hpp>
 #include <boost/iterator/detail/any_conversion_eater.hpp>
-#include "boost/mpl/bool.hpp"
+#include <boost/mpl/bool.hpp>
 
 // should be the last #includes
 #include <boost/type_traits/detail/bool_trait_def.hpp>