diff --git a/lib/util.php b/lib/util.php
index 37744fc5b7..018b7cad51 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -536,7 +536,7 @@ function common_linkify($url) {
         throw new ServerException("Can't linkify url '$url'");
     }
 
-    $attrs = array('href' => $canon, 'rel' => 'external');
+    $attrs = array('href' => $longurl, 'rel' => 'external');
 
     $is_attachment = false;
     $attachment_id = null;