diff --git a/compose/wait-for-mysql b/compose/wait-for-mysql
index 900cb49e9..2bf091419 100644
--- a/compose/wait-for-mysql
+++ b/compose/wait-for-mysql
@@ -19,7 +19,7 @@ try:
 
     db=MySQLdb.connect(host=db_host,user=db_user,
                   passwd=db_password,db=db_name)
-except MySQLdb._exceptions.OperationalError as e:
+except MySQLdb._exceptions.OperationalError:
     sys.exit(-1)
 sys.exit(0)