How to Disable Qmail Queue Scanner?

Recently I have problem with qmail, it can't send or receive email because qmail-scanner error problem.  

(/var/log/maillog) 

Requeuing: Insecure directory in $ENV{PATH} while running with -T switch at /var/qmail/bin/qmail-scanner-queue.pl line 1351,line 51.

So I remove qmail-scanner-queue for temporary. 

#vi /var/qmail/supervise/qmail-smtpd/run

Search this line below and remove it

QMAILQUEUE="/var/qmail/bin/qmail-scanner-queue.pl" ; export QMAILQUEUE 

Before 

#!/bin/sh

QMAILQUEUE="/var/qmail/bin/qmail-scanner-queue.pl" ; export QMAILQUEUE

QMAILDUID=`id -u vpopmail`

NOFILESGID=`id -g vpopmail`

MAXSMTPD=`cat /var/qmail/control/concurrencyincoming`

...

...

...

After

#!/bin/sh

QMAILDUID=`id -u vpopmail`

NOFILESGID=`id -g vpopmail`

MAXSMTPD=`cat /var/qmail/control/concurrencyincoming`

...

...

...

Then, qmail working without qmail queue scanner.