How do I change this SELECT stement into a DELETE statement to work with mysql

Question

Trying to change this SELECT statement

SELECT t1.user_id FROM jforum_users t1 WHERE EXISTS 
      (SELECT t3.user_id 
          FROM jforum_users t3 
             LEFT JOIN jforum_posts t2 ON t3.user_id=t2.user_id  
          WHERE user_website IS NOT NULL 
             AND t2.user_id IS  null 
             AND t1.user_id=t3.user_id
       );

into a DELETE statement

DELETE FROM jforum_users t1 WHERE EXISTS
   (SELECT t3.user_id 
       FROM jforum_users t3 
          LEFT JOIN jforum_posts t2 ON t3.user_id=t2.user_id  
       WHERE user_website IS NOT NULL
         AND t2.user_id IS NULL 
         AND t1.user_id=t3.user_id
   );

The SELECT statement works but DELETE but doesnt like it giving error:

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where exists (select t3.user_id from jforum_users t3 left join jforum_posts t2 o' at line 1

what am i doing wrong ?