diff --git a/include/boost/type_traits/arithmetic_traits.hpp b/include/boost/type_traits/arithmetic_traits.hpp
index 656e213..77e1f06 100644
--- a/include/boost/type_traits/arithmetic_traits.hpp
+++ b/include/boost/type_traits/arithmetic_traits.hpp
@@ -10,7 +10,7 @@
 //  is_void, is_integral, is_float, is_arithmetic, is_fundamental.
 //
 
-/  Revision History:
+//  Revision History:
 // Feb 19 2001 Added #include <climits> (David Abrahams)
 
 #ifndef BOOST_ARITHMETIC_TYPE_TRAITS_HPP