Error about insert into `sequences` when installing with table prefix

I installed two drupals into one database, one with no table prefix, one with 'test_' as the prefix.

Installing drupal_wiki into the latter one resulted in an error message about failing to insert into `sequence` due to a duplicate uid.

Looking at the profile code, it appears this is because the table `sequence` is not in brackets as it should. The attached patch may fix it, but I don't know if sequence is in backquotes for a reason, so this'd need review.