schema module reports mismatching tables (no big deal but - necessary to fix )

Here:

watcher_nodes

column mail:
declared: array('type' => 'varchar', 'length' => 128, 'default' => )
actual: array('type' => 'varchar', 'length' => '128', 'not null' => TRUE, 'default' => '')

column watch_for:
declared: array('type' => 'int', 'size' => 'tiny', 'default' => )
actual: array('type' => 'int', 'size' => 'tiny', 'not null' => FALSE, 'disp-width' => '4')

column watch_for: key 'not null' not set, ignoring inspected default value