Trying to get rid of a type

Hello all,
We misspelled the OPAQUE declaration in a function as opapue.  now we
have a type record in the pg_type table that looks like this:

-[ RECORD 1 ]+-------
typname      | opapue
typowner     | 0
typlen       | 0
typprtlen    | 0
typbyval     | f
typtype      |
typisdefined | f
typdelim     |
typrelid     | 0
typelem      | 0
typinput     | -
typoutput    | -
typreceive   | -
typsend      | -
typalign     | i
typstorage   | p
typdefault   | opapue

i've tried DROP TYPE opapue but got
ERROR:  RemoveType: type '_opapue' does not exist

when we dump the database we get a warning:
pg_dump: WARNING: owner of data type opapue appears to be invalid

the data still dumps but i want to get rid of this warning.  i'm
hesitant to delete the record directly out of pg_type.  Should I or
shouldn't I delete it?

PostgreSQL version 7.2.1
--

Tom Jenkins
Development InfoStructure
http://www.devis.com