diff --git a/addressbook/inc/class.addressbook_bo.inc.php b/addressbook/inc/class.addressbook_bo.inc.php
index c875775003..f8f1503a85 100755
--- a/addressbook/inc/class.addressbook_bo.inc.php
+++ b/addressbook/inc/class.addressbook_bo.inc.php
@@ -851,8 +851,11 @@ class addressbook_bo extends addressbook_so
 		// maybe we need that for id and account_id as well.
 		if (is_array($old) && (!isset($old['owner']) || empty($old['owner'])))
 		{
-			error_log(__METHOD__.__LINE__." Trying to change account to owner:". $to_write['owner'].' Account affected:'.array2string($old).' Data send:'.array2string($to_write));
-			if (isset($to_write['owner']) && !empty($to_write['owner'])) unset($to_write['owner']);
+			if (isset($to_write['owner']) && !empty($to_write['owner']))
+			{
+				error_log(__METHOD__.__LINE__." Trying to change account to owner:". $to_write['owner'].' Account affected:'.array2string($old).' Data send:'.array2string($to_write));
+				unset($to_write['owner']);
+			}
 		}
 		// we dont update the content-history, if we run inside setup (admin-account-creation)
 		if(!($this->error = parent::save($to_write)) && is_object($GLOBALS['egw']->contenthistory))