diff --git a/docs/commands.rst b/docs/commands.rst
index a1e55654..24bf8490 100644
--- a/docs/commands.rst
+++ b/docs/commands.rst
@@ -334,9 +334,8 @@ Sub commands:
 Arguments:
 
 * ``name``: unique name of pattern
-* ``pattern``: a valid `Perl-compatible Regular Expression`_
-
-.. _Perl-compatible Regular Expression: https://developer.gnome.org/glib/stable/glib-regex-syntax.html
+* ``pattern``: a valid Perl-compatible Regular Expression,
+  see :manpage:`pcrepattern(3)`
 
 .. _commands-filter:
 
diff --git a/docs/conf.py b/docs/conf.py
index 202a4429..5a867c63 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -81,6 +81,8 @@
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'
 
+# A URL to cross-reference manpage directives.
+manpages_url = 'https://man7.org/linux/man-pages/man{section}/{page}.{section}.html'
 
 # -- Options for HTML output ----------------------------------------------