diff --git a/include/boost/regex.hpp b/include/boost/regex.hpp
index d3da66ee..8ad2fbca 100644
--- a/include/boost/regex.hpp
+++ b/include/boost/regex.hpp
@@ -524,7 +524,7 @@ public:
       set_expression(first, last, f | regbase::use_except);
       return *this;
    }
-#ifndef BOOST_NO_MEMBER_TEMPLATES
+#if !defined(BOOST_NO_MEMBER_TEMPLATES) && !(defined(__IBMCPP__) && (__IBMCPP__ <= 500))
 
    template <class ST, class SA>
    unsigned int BOOST_REGEX_CALL set_expression(const std::basic_string<charT, ST, SA>& p, flag_type f = regbase::normal)
diff --git a/include/boost/regex_fwd.hpp b/include/boost/regex_fwd.hpp
index 07aea147..679ad945 100644
--- a/include/boost/regex_fwd.hpp
+++ b/include/boost/regex_fwd.hpp
@@ -53,9 +53,9 @@ class regex_traits;
 template <class charT, class traits = regex_traits<charT>, class Allocator = BOOST_DEFAULT_ALLOCATOR(charT) >
 class reg_expression;
 
-typedef reg_expression<char, regex_traits<char>, BOOST_DEFAULT_ALLOCATOR(char)> regex;
+typedef reg_expression<char, regex_traits<char>, BOOST_DEFAULT_ALLOCATOR(char) > regex;
 #ifndef BOOST_NO_WREGEX
-typedef reg_expression<wchar_t, regex_traits<wchar_t>, BOOST_DEFAULT_ALLOCATOR(wchar_t)> wregex;
+typedef reg_expression<wchar_t, regex_traits<wchar_t>, BOOST_DEFAULT_ALLOCATOR(wchar_t) > wregex;
 #endif
 
 } // namespace boost