Procedure not working using "IF"

I have the fallowing procedure:

DELIMITER $$
CREATE OR REPLACE PROCEDURE add_comments
AS
BEGIN

DECLARE var INT;
SELECT grade INTO var FROM table1;

    IF (var <= 7) THEN
        UPDATE table2 set comment = not_good;
    ELSE
        UPDATE table2 set comment = good;
    END IF;
END$$

comment, not_good and good are all columns from table2

but it gives me the error:

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AS
BEGIN

    IF (var <= 7) 
    BEGIN
        UPDATE table2 set comment ' at line 3

Can't find out the problem, can someone help me with this? Thanks!