diff --git a/include/boost/regex/v5/basic_regex.hpp b/include/boost/regex/v5/basic_regex.hpp
index c486c8d5..0e6f232e 100644
--- a/include/boost/regex/v5/basic_regex.hpp
+++ b/include/boost/regex/v5/basic_regex.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares template class basic_regex.
   */
 
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_HPP
-#define BOOST_REGEX_V4_BASIC_REGEX_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_HPP
+#define BOOST_REGEX_V5_BASIC_REGEX_HPP
 
 #include <boost/type_traits/is_same.hpp>
 #include <boost/container_hash/hash.hpp>
diff --git a/include/boost/regex/v5/basic_regex_creator.hpp b/include/boost/regex/v5/basic_regex_creator.hpp
index 3834d807..c83c1cf9 100644
--- a/include/boost/regex/v5/basic_regex_creator.hpp
+++ b/include/boost/regex/v5/basic_regex_creator.hpp
@@ -17,8 +17,8 @@
   *                the data members of a regex_data object.
   */
 
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_CREATOR_HPP
-#define BOOST_REGEX_V4_BASIC_REGEX_CREATOR_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_CREATOR_HPP
+#define BOOST_REGEX_V5_BASIC_REGEX_CREATOR_HPP
 
 #include <boost/regex/v5/indexed_bit_flag.hpp>
 
diff --git a/include/boost/regex/v5/basic_regex_parser.hpp b/include/boost/regex/v5/basic_regex_parser.hpp
index 77da995d..85ca3203 100644
--- a/include/boost/regex/v5/basic_regex_parser.hpp
+++ b/include/boost/regex/v5/basic_regex_parser.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares template class basic_regex_parser.
   */
 
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_PARSER_HPP
-#define BOOST_REGEX_V4_BASIC_REGEX_PARSER_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_PARSER_HPP
+#define BOOST_REGEX_V5_BASIC_REGEX_PARSER_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/char_regex_traits.hpp b/include/boost/regex/v5/char_regex_traits.hpp
index e8a501ca..95a35c24 100644
--- a/include/boost/regex/v5/char_regex_traits.hpp
+++ b/include/boost/regex/v5/char_regex_traits.hpp
@@ -17,8 +17,8 @@
   */
 
 
-#ifndef BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
-#define BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
+#ifndef BOOST_REGEX_V5_CHAR_REGEX_TRAITS_HPP
+#define BOOST_REGEX_V5_CHAR_REGEX_TRAITS_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/indexed_bit_flag.hpp b/include/boost/regex/v5/indexed_bit_flag.hpp
index c9d32c59..2b17864e 100644
--- a/include/boost/regex/v5/indexed_bit_flag.hpp
+++ b/include/boost/regex/v5/indexed_bit_flag.hpp
@@ -19,8 +19,8 @@
 #include <boost/regex/config.hpp>
 #include <set>
 
-#ifndef BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
-#define BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
+#ifndef BOOST_REGEX_V5_INDEXED_BIT_FLAG_HPP
+#define BOOST_REGEX_V5_INDEXED_BIT_FLAG_HPP
 
 namespace boost{
 namespace BOOST_REGEX_DETAIL_NS{
diff --git a/include/boost/regex/v5/iterator_traits.hpp b/include/boost/regex/v5/iterator_traits.hpp
index ae45ecb8..1ece5c17 100644
--- a/include/boost/regex/v5/iterator_traits.hpp
+++ b/include/boost/regex/v5/iterator_traits.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares iterator traits workarounds.
   */
 
-#ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
-#define BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
+#ifndef BOOST_REGEX_V5_ITERATOR_TRAITS_HPP
+#define BOOST_REGEX_V5_ITERATOR_TRAITS_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/match_flags.hpp b/include/boost/regex/v5/match_flags.hpp
index 5dc72655..a2cd307f 100644
--- a/include/boost/regex/v5/match_flags.hpp
+++ b/include/boost/regex/v5/match_flags.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares match_flags type.
   */
 
-#ifndef BOOST_REGEX_V4_MATCH_FLAGS
-#define BOOST_REGEX_V4_MATCH_FLAGS
+#ifndef BOOST_REGEX_V5_MATCH_FLAGS
+#define BOOST_REGEX_V5_MATCH_FLAGS
 
 #ifdef __cplusplus
 #  include <boost/cstdint.hpp>
diff --git a/include/boost/regex/v5/match_results.hpp b/include/boost/regex/v5/match_results.hpp
index 7e509801..a8984ce2 100644
--- a/include/boost/regex/v5/match_results.hpp
+++ b/include/boost/regex/v5/match_results.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares template class match_results.
   */
 
-#ifndef BOOST_REGEX_V4_MATCH_RESULTS_HPP
-#define BOOST_REGEX_V4_MATCH_RESULTS_HPP
+#ifndef BOOST_REGEX_V5_MATCH_RESULTS_HPP
+#define BOOST_REGEX_V5_MATCH_RESULTS_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/mem_block_cache.hpp b/include/boost/regex/v5/mem_block_cache.hpp
index 1996a512..09e6ba4f 100644
--- a/include/boost/regex/v5/mem_block_cache.hpp
+++ b/include/boost/regex/v5/mem_block_cache.hpp
@@ -15,8 +15,8 @@
   *   DESCRIPTION: memory block cache used by the non-recursive matcher.
   */
 
-#ifndef BOOST_REGEX_V4_MEM_BLOCK_CACHE_HPP
-#define BOOST_REGEX_V4_MEM_BLOCK_CACHE_HPP
+#ifndef BOOST_REGEX_V5_MEM_BLOCK_CACHE_HPP
+#define BOOST_REGEX_V5_MEM_BLOCK_CACHE_HPP
 
 #include <new>
 #ifdef BOOST_HAS_THREADS
diff --git a/include/boost/regex/v5/perl_matcher_common.hpp b/include/boost/regex/v5/perl_matcher_common.hpp
index d6c2d028..637bc622 100644
--- a/include/boost/regex/v5/perl_matcher_common.hpp
+++ b/include/boost/regex/v5/perl_matcher_common.hpp
@@ -17,8 +17,8 @@
   *                common to both the recursive and non-recursive versions.
   */
 
-#ifndef BOOST_REGEX_V4_PERL_MATCHER_COMMON_HPP
-#define BOOST_REGEX_V4_PERL_MATCHER_COMMON_HPP
+#ifndef BOOST_REGEX_V5_PERL_MATCHER_COMMON_HPP
+#define BOOST_REGEX_V5_PERL_MATCHER_COMMON_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/perl_matcher_non_recursive.hpp b/include/boost/regex/v5/perl_matcher_non_recursive.hpp
index 8f264e46..49b565f6 100644
--- a/include/boost/regex/v5/perl_matcher_non_recursive.hpp
+++ b/include/boost/regex/v5/perl_matcher_non_recursive.hpp
@@ -17,8 +17,8 @@
   *                specific to the non-recursive implementation.
   */
 
-#ifndef BOOST_REGEX_V4_PERL_MATCHER_NON_RECURSIVE_HPP
-#define BOOST_REGEX_V4_PERL_MATCHER_NON_RECURSIVE_HPP
+#ifndef BOOST_REGEX_V5_PERL_MATCHER_NON_RECURSIVE_HPP
+#define BOOST_REGEX_V5_PERL_MATCHER_NON_RECURSIVE_HPP
 
 #include <boost/regex/v5/mem_block_cache.hpp>
 
diff --git a/include/boost/regex/v5/regbase.hpp b/include/boost/regex/v5/regbase.hpp
index 2b737d5a..8647535a 100644
--- a/include/boost/regex/v5/regbase.hpp
+++ b/include/boost/regex/v5/regbase.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares class regbase.
   */
 
-#ifndef BOOST_REGEX_V4_REGBASE_HPP
-#define BOOST_REGEX_V4_REGBASE_HPP
+#ifndef BOOST_REGEX_V5_REGBASE_HPP
+#define BOOST_REGEX_V5_REGBASE_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/regex.hpp b/include/boost/regex/v5/regex.hpp
index 7a1ee4bf..202065f8 100644
--- a/include/boost/regex/v5/regex.hpp
+++ b/include/boost/regex/v5/regex.hpp
@@ -41,7 +41,7 @@
 #ifndef BOOST_REGEX_RAW_BUFFER_HPP
 #include <boost/regex/v5/error_type.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_MATCH_FLAGS
+#ifndef BOOST_REGEX_V5_MATCH_FLAGS
 #include <boost/regex/v5/match_flags.hpp>
 #endif
 #ifndef BOOST_REGEX_RAW_BUFFER_HPP
@@ -51,34 +51,34 @@
 #include <boost/regex/pattern_except.hpp>
 #endif
 
-#ifndef BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
+#ifndef BOOST_REGEX_V5_CHAR_REGEX_TRAITS_HPP
 #include <boost/regex/v5/char_regex_traits.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_STATES_HPP
+#ifndef BOOST_REGEX_V5_STATES_HPP
 #include <boost/regex/v5/states.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_REGBASE_HPP
+#ifndef BOOST_REGEX_V5_REGBASE_HPP
 #include <boost/regex/v5/regbase.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
+#ifndef BOOST_REGEX_V5_ITERATOR_TRAITS_HPP
 #include <boost/regex/v5/iterator_traits.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_HPP
 #include <boost/regex/v5/basic_regex.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_CREATOR_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_CREATOR_HPP
 #include <boost/regex/v5/basic_regex_creator.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_BASIC_REGEX_PARSER_HPP
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_PARSER_HPP
 #include <boost/regex/v5/basic_regex_parser.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_SUB_MATCH_HPP
+#ifndef BOOST_REGEX_V5_SUB_MATCH_HPP
 #include <boost/regex/v5/sub_match.hpp>
 #endif
 #ifndef BOOST_REGEX_FORMAT_HPP
 #include <boost/regex/v5/regex_format.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_MATCH_RESULTS_HPP
+#ifndef BOOST_REGEX_V5_MATCH_RESULTS_HPP
 #include <boost/regex/v5/match_results.hpp>
 #endif
 #ifndef BOOST_REGEX_MATCHER_HPP
@@ -104,7 +104,7 @@ typedef match_results<std::wstring::const_iterator> wsmatch;
 #ifndef BOOST_REGEX_MATCH_HPP
 #include <boost/regex/v5/regex_match.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_REGEX_SEARCH_HPP
+#ifndef BOOST_REGEX_V5_REGEX_SEARCH_HPP
 #include <boost/regex/v5/regex_search.hpp>
 #endif
 #ifndef BOOST_REGEX_ITERATOR_HPP
@@ -113,13 +113,13 @@ typedef match_results<std::wstring::const_iterator> wsmatch;
 #ifndef BOOST_REGEX_TOKEN_ITERATOR_HPP
 #include <boost/regex/v5/regex_token_iterator.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_REGEX_GREP_HPP
+#ifndef BOOST_REGEX_V5_REGEX_GREP_HPP
 #include <boost/regex/v5/regex_grep.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_REGEX_REPLACE_HPP
+#ifndef BOOST_REGEX_V5_REGEX_REPLACE_HPP
 #include <boost/regex/v5/regex_replace.hpp>
 #endif
-#ifndef BOOST_REGEX_V4_REGEX_MERGE_HPP
+#ifndef BOOST_REGEX_V5_REGEX_MERGE_HPP
 #include <boost/regex/v5/regex_merge.hpp>
 #endif
 #ifndef BOOST_REGEX_SPLIT_HPP
diff --git a/include/boost/regex/v5/regex_grep.hpp b/include/boost/regex/v5/regex_grep.hpp
index c5cb054e..f6997494 100644
--- a/include/boost/regex/v5/regex_grep.hpp
+++ b/include/boost/regex/v5/regex_grep.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides regex_grep implementation.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_GREP_HPP
-#define BOOST_REGEX_V4_REGEX_GREP_HPP
+#ifndef BOOST_REGEX_V5_REGEX_GREP_HPP
+#define BOOST_REGEX_V5_REGEX_GREP_HPP
 
 
 namespace boost{
@@ -151,5 +151,5 @@ inline unsigned int regex_grep(bool (*foo)(const match_results<std::basic_string
 
 } // namespace boost
 
-#endif  // BOOST_REGEX_V4_REGEX_GREP_HPP
+#endif  // BOOST_REGEX_V5_REGEX_GREP_HPP
 
diff --git a/include/boost/regex/v5/regex_iterator.hpp b/include/boost/regex/v5/regex_iterator.hpp
index bbdeed58..bccbd7f7 100644
--- a/include/boost/regex/v5/regex_iterator.hpp
+++ b/include/boost/regex/v5/regex_iterator.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides regex_iterator implementation.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_ITERATOR_HPP
-#define BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+#ifndef BOOST_REGEX_V5_REGEX_ITERATOR_HPP
+#define BOOST_REGEX_V5_REGEX_ITERATOR_HPP
 
 #include <boost/shared_ptr.hpp>
 
@@ -191,5 +191,5 @@ inline regex_iterator<typename std::basic_string<charT, ST, SA>::const_iterator,
 
 } // namespace boost
 
-#endif // BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+#endif // BOOST_REGEX_V5_REGEX_ITERATOR_HPP
 
diff --git a/include/boost/regex/v5/regex_merge.hpp b/include/boost/regex/v5/regex_merge.hpp
index 404ca775..1d21f19f 100644
--- a/include/boost/regex/v5/regex_merge.hpp
+++ b/include/boost/regex/v5/regex_merge.hpp
@@ -18,8 +18,8 @@
   *                by regex.hpp, do not include on its own.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_MERGE_HPP
-#define BOOST_REGEX_V4_REGEX_MERGE_HPP
+#ifndef BOOST_REGEX_V5_REGEX_MERGE_HPP
+#define BOOST_REGEX_V5_REGEX_MERGE_HPP
 
 
 namespace boost{
@@ -88,6 +88,6 @@ inline std::basic_string<charT> regex_merge(const std::basic_string<charT>& s,
 
 } // namespace boost
 
-#endif  // BOOST_REGEX_V4_REGEX_MERGE_HPP
+#endif  // BOOST_REGEX_V5_REGEX_MERGE_HPP
 
 
diff --git a/include/boost/regex/v5/regex_replace.hpp b/include/boost/regex/v5/regex_replace.hpp
index 415c58b6..4cd7ddf7 100644
--- a/include/boost/regex/v5/regex_replace.hpp
+++ b/include/boost/regex/v5/regex_replace.hpp
@@ -18,8 +18,8 @@
   *                by regex.hpp, do not include on its own.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_REPLACE_HPP
-#define BOOST_REGEX_V4_REGEX_REPLACE_HPP
+#ifndef BOOST_REGEX_V5_REGEX_REPLACE_HPP
+#define BOOST_REGEX_V5_REGEX_REPLACE_HPP
 
 
 namespace boost{
@@ -94,6 +94,6 @@ std::basic_string<charT> regex_replace(const std::basic_string<charT>& s,
 
 } // namespace boost
 
-#endif  // BOOST_REGEX_V4_REGEX_REPLACE_HPP
+#endif  // BOOST_REGEX_V5_REGEX_REPLACE_HPP
 
 
diff --git a/include/boost/regex/v5/regex_search.hpp b/include/boost/regex/v5/regex_search.hpp
index 0725d3ec..b508fd46 100644
--- a/include/boost/regex/v5/regex_search.hpp
+++ b/include/boost/regex/v5/regex_search.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides regex_search implementation.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_SEARCH_HPP
-#define BOOST_REGEX_V4_REGEX_SEARCH_HPP
+#ifndef BOOST_REGEX_V5_REGEX_SEARCH_HPP
+#define BOOST_REGEX_V5_REGEX_SEARCH_HPP
 
 
 namespace boost{
@@ -212,6 +212,6 @@ inline bool regex_search(const std::basic_string<wchar_t>& s,
 
 } // namespace boost
 
-#endif  // BOOST_REGEX_V4_REGEX_SEARCH_HPP
+#endif  // BOOST_REGEX_V5_REGEX_SEARCH_HPP
 
 
diff --git a/include/boost/regex/v5/regex_token_iterator.hpp b/include/boost/regex/v5/regex_token_iterator.hpp
index ab15a257..61eea711 100644
--- a/include/boost/regex/v5/regex_token_iterator.hpp
+++ b/include/boost/regex/v5/regex_token_iterator.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides regex_token_iterator implementation.
   */
 
-#ifndef BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
-#define BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+#ifndef BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
+#define BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
 
 #include <boost/shared_ptr.hpp>
 #include <boost/detail/workaround.hpp>
@@ -318,7 +318,7 @@ inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_ite
 
 } // namespace boost
 
-#endif // BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+#endif // BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
 
 
 
diff --git a/include/boost/regex/v5/states.hpp b/include/boost/regex/v5/states.hpp
index 86eb02b1..a0e3b4bc 100644
--- a/include/boost/regex/v5/states.hpp
+++ b/include/boost/regex/v5/states.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares internal state machine structures.
   */
 
-#ifndef BOOST_REGEX_V4_STATES_HPP
-#define BOOST_REGEX_V4_STATES_HPP
+#ifndef BOOST_REGEX_V5_STATES_HPP
+#define BOOST_REGEX_V5_STATES_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/sub_match.hpp b/include/boost/regex/v5/sub_match.hpp
index 30a580d5..9f0577aa 100644
--- a/include/boost/regex/v5/sub_match.hpp
+++ b/include/boost/regex/v5/sub_match.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Declares template class sub_match.
   */
 
-#ifndef BOOST_REGEX_V4_SUB_MATCH_HPP
-#define BOOST_REGEX_V4_SUB_MATCH_HPP
+#ifndef BOOST_REGEX_V5_SUB_MATCH_HPP
+#define BOOST_REGEX_V5_SUB_MATCH_HPP
 
 #ifdef BOOST_MSVC
 #pragma warning(push)
diff --git a/include/boost/regex/v5/u32regex_iterator.hpp b/include/boost/regex/v5/u32regex_iterator.hpp
index f8763a8d..66fc83f9 100644
--- a/include/boost/regex/v5/u32regex_iterator.hpp
+++ b/include/boost/regex/v5/u32regex_iterator.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides u32regex_iterator implementation.
   */
 
-#ifndef BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
-#define BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
+#ifndef BOOST_REGEX_V5_U32REGEX_ITERATOR_HPP
+#define BOOST_REGEX_V5_U32REGEX_ITERATOR_HPP
 
 namespace boost{
 
@@ -181,5 +181,5 @@ inline u32regex_iterator<const UChar*> make_u32regex_iterator(const U_NAMESPACE_
 
 } // namespace boost
 
-#endif // BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+#endif // BOOST_REGEX_V5_REGEX_ITERATOR_HPP
 
diff --git a/include/boost/regex/v5/u32regex_token_iterator.hpp b/include/boost/regex/v5/u32regex_token_iterator.hpp
index 2e04810d..9562f525 100644
--- a/include/boost/regex/v5/u32regex_token_iterator.hpp
+++ b/include/boost/regex/v5/u32regex_token_iterator.hpp
@@ -16,8 +16,8 @@
   *   DESCRIPTION: Provides u32regex_token_iterator implementation.
   */
 
-#ifndef BOOST_REGEX_V4_U32REGEX_TOKEN_ITERATOR_HPP
-#define BOOST_REGEX_V4_U32REGEX_TOKEN_ITERATOR_HPP
+#ifndef BOOST_REGEX_V5_U32REGEX_TOKEN_ITERATOR_HPP
+#define BOOST_REGEX_V5_U32REGEX_TOKEN_ITERATOR_HPP
 
 #if (BOOST_WORKAROUND(BOOST_BORLANDC, >= 0x560) && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x570)))\
       || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
@@ -353,7 +353,7 @@ inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const
 
 } // namespace boost
 
-#endif // BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+#endif // BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP