Index: /trunk/roundcubemail/program/include/rcmail.php
===================================================================
--- /trunk/roundcubemail/program/include/rcmail.php	(revision 4986)
+++ /trunk/roundcubemail/program/include/rcmail.php	(revision 4987)
@@ -387,4 +387,8 @@
     $abook_type  = strtolower($this->config->get('address_book_type'));
 
+    // 'sql' is the alias for '0' used by autocomplete
+    if ($id == 'sql')
+        $id = '0';
+
     // use existing instance
     if (isset($this->address_books[$id]) && is_a($this->address_books[$id], 'rcube_addressbook') && (!$writeable || !$this->address_books[$id]->readonly)) {