diff --git a/include/boost/detail/sp_typeinfo.hpp b/include/boost/detail/sp_typeinfo.hpp
index 636fe27..3ee934f 100644
--- a/include/boost/detail/sp_typeinfo.hpp
+++ b/include/boost/detail/sp_typeinfo.hpp
@@ -74,7 +74,7 @@ template<class T> struct sp_typeid_
     }
 };
 
-template<class T> sp_typeinfo sp_typeid_< T >::ti_( sp_typeid_< T >::name() );
+template<class T> sp_typeinfo sp_typeid_< T >::ti_ = sp_typeid_< T >::name();
 
 template<class T> struct sp_typeid_< T & >: sp_typeid_< T >
 {