diff --git a/doc/coding-style.asciidoc b/doc/coding-style.asciidoc
index b6e126ef..043b1bea 100644
--- a/doc/coding-style.asciidoc
+++ b/doc/coding-style.asciidoc
@@ -5,8 +5,9 @@ Kakoune is written in C++11, here are the main coding style points:
 
  * Avoid external dependencies besides posix/stdc++/ncurses
 
-   - That means avoid depending on boost, it is only allowed for regex
-     support until stdc++ regex are more widely available.
+   - That means avoid depending on boost, it is only allowed for the regex
+     implementation. The reference for the current regex support is available under
+     http://www.boost.org/doc/libs/1_59_0/libs/regex/doc/html/boost_regex/syntax/perl_syntax.html[Perl Regular Expression Syntax].
 
  * 4 spaces for indentation, no tabs