Description too long for varchar

The description in the .info is too long for drupal, and causes the following error: (even when the module it not enabled).

warning: pg_query(): Query failed: ERROR: value too long for type character varying(255) in /home/brenda/projects/drupal-5.1/includes/database.pgsql.inc on line 125.
user warning: query: INSERT INTO system (name, description, type, filename, status, throttle, bootstrap) VALUES ('carbon', 'Allows users to create and maintain their carbon footprints. By entering utility meter readings, gas/petrol consumption and trips by air, users can build an accurate record of CO2 emissions about which they have some influence. Users can also view records submitted by others. Administrators can add, adjust and remove different sources of carbon emissions.', 'module', 'sites/gargi.wgtn.cat-it.co.nz/modules/carbon/carbon.module', 0, 0, 0) in /home/brenda/projects/drupal-5.1/includes/database.pgsql.inc on line 144.