diff --git a/code/site/components/com_pages/dispatcher/router/resolver/regex.php b/code/site/components/com_pages/dispatcher/router/resolver/regex.php
index 2f3380585..1f054793e 100644
--- a/code/site/components/com_pages/dispatcher/router/resolver/regex.php
+++ b/code/site/components/com_pages/dispatcher/router/resolver/regex.php
@@ -78,7 +78,7 @@ protected function _initialize(KObjectConfig $config)
                 'alpha'  => '[A-Za-z]++',
                 '*alpha' => '[A-Za-z]+(,[A-Za-z]+)*',
                 'id'     => '[0-9]++[-]++[0-9A-Za-z-]++',
-                'slug'   => '[^0-9-][a-z-0-9]++',
+                'slug'   => '(?![0-9]++-)[^-][0-9A-Za-z-]++',
                 '*'      => '.+?',
                 '**'     => '.++',
                 ''       => '[^/\.]++',