Zend certified PHP/Magento developer

Syntax Error in in Cron Job

I have below command in cron.d

*/5 * * * * root /usr/bin/pgbadger  --prefix '%t [%p]: <%u:%d:%r> '  -f stderr  -q `/usr/bin/find /pgdata/log_test -mtime -6 -name "*.log"` -o /pgdata/log_test/pg_report-`date +%F`.html

The command runs when run from the shell but when putting it in cron.d it gives below syntax error.

/bin/sh: -c: line 0: unexpected EOF while looking for matching `''
/bin/sh: -c: line 1: syntax error: unexpected end of file

I am not sure where to escape the single quote.

Thanks