Can't execute query

SELECT * FROM revues WHERE ACTIF=1 AND SOUSFAMILLE1 =  AND COLLEC = 1 ORDER BY EPUISE, ID DESC

MySQL Error: 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 'AND COLLEC = 1 ORDER BY EPUISE, ID DESC' at line 1

This script cannot continue, terminating.