Syntax error: type modifier is not allowed for type "text"

drush en -y rules_link
....
PDOException: SQLSTATE[42601]: Syntax error: 7 ERROR: type modifier is not allowed for type "text"
LINE 5: path text(2048),
^: CREATE TABLE {rules_link} (
id serial,
....
path text(2048),
....

I think it is because I run drupal 7 on postgres not mysql.