diff --git a/lib/SimpleSAML/Configuration.php b/lib/SimpleSAML/Configuration.php
index 145eb17ea4259f753d84a4a1826d72eccb23a9a3..8e7fc1f3f42a13acf19b36b19908d152d672053c 100644
--- a/lib/SimpleSAML/Configuration.php
+++ b/lib/SimpleSAML/Configuration.php
@@ -912,7 +912,7 @@ class Configuration implements Utils\ClearableState
      *                       required if this parameter isn't given. The default value can be any value, including
      *                       null.
      *
-     * @return array The option with the given name, or $default if the option isn't found and $default is specified.
+     * @return array|mixed The option with the given name, or $default if the option isn't found and $default is specified.
      */
     public function getArrayize($name, $default = self::REQUIRED_OPTION)
     {