...key belongs to ...

[Michael D. Berger]

On a Linux box, in encrypting a file with gpg, I get this query:

   It is NOT certain that the key belongs to the person named
   in the user ID.  If you *really* know what you are doing,
   you may answer the next question with yes.

   Use this key anyway? (y/N) n

Now in the context in which this is being used, there is no
uncertainty regarding key ownership, and the encryption is
part of a bash script.  The query stops the script.

Therefore, how can I prevent this query?

Thanks for your help.
Mike.