diff --git a/doc/html/reference.html b/doc/html/reference.html
index d38d597..f76c28a 100644
--- a/doc/html/reference.html
+++ b/doc/html/reference.html
@@ -1094,7 +1094,7 @@ already <tt class="docutils literal">#defined</tt>.</p>
 <col class="field-name" />
 <col class="field-body" />
 <tbody valign="top">
-<tr class="field"><th class="field-name">Default Value:</th><td class="field-body"><tt class="docutils literal">5</tt></td>
+<tr class="field"><th class="field-name">Default Value:</th><td class="field-body"><tt class="docutils literal">8</tt></td>
 </tr>
 </tbody>
 </table>
diff --git a/doc/reference.rst b/doc/reference.rst
index 408a5ec..552a181 100644
--- a/doc/reference.rst
+++ b/doc/reference.rst
@@ -970,7 +970,7 @@ already ``#defined``.
 
 __ ../../../../boost/parameter/config.hpp
 
-:Default Value: ``5``
+:Default Value: ``8``
 
 Tutorial
 ========
diff --git a/include/boost/parameter/config.hpp b/include/boost/parameter/config.hpp
index e4fcc29..5710c92 100644
--- a/include/boost/parameter/config.hpp
+++ b/include/boost/parameter/config.hpp
@@ -7,7 +7,7 @@
 #define BOOST_PARAMETER_CONFIG_050403_HPP
 
 #ifndef BOOST_PARAMETER_MAX_ARITY
-# define BOOST_PARAMETER_MAX_ARITY 5
+# define BOOST_PARAMETER_MAX_ARITY 8
 #endif
 
 #endif // BOOST_PARAMETER_CONFIG_050403_HPP