diff --git a/include/ndnboost/numeric/conversion/bounds.hpp b/include/ndnboost/numeric/conversion/bounds.hpp
index 2792ab0..519de81 100644
--- a/include/ndnboost/numeric/conversion/bounds.hpp
+++ b/include/ndnboost/numeric/conversion/bounds.hpp
@@ -7,8 +7,8 @@
 //
 // Contact the author at: fernando_cacciola@hotmail.com
 // 
-#ifndef BOOST_NUMERIC_CONVERSION_BOUNDS_12NOV2002_HPP
-#define BOOST_NUMERIC_CONVERSION_BOUNDS_12NOV2002_HPP
+#ifndef NDNBOOST_NUMERIC_CONVERSION_BOUNDS_12NOV2002_HPP
+#define NDNBOOST_NUMERIC_CONVERSION_BOUNDS_12NOV2002_HPP
 
 #include "ndnboost/numeric/conversion/detail/bounds.hpp"