diff --git a/common/framework/security.php b/common/framework/security.php
index 5a2803c2d..da5ada968 100644
--- a/common/framework/security.php
+++ b/common/framework/security.php
@@ -153,7 +153,7 @@ class Security
 	 * @param string $format
 	 * @return string
 	 */
-	public function getRandom($length = 32, $format = 'alnum')
+	public static function getRandom($length = 32, $format = 'alnum')
 	{
 		// Find out how many bytes of entropy we really need.
 		switch($format)