dropping users that start with ';'

By mistake I created a pgsql user whose username begins with a ;
I am now having trouble dropping the user:

dropuser ;trialuser
ERROR:  parser: parse error at or near "trialuser" at character 1
ERROR:  parser: parse error at or near "trialuser" at character 1

can someone help?
--
  Gatts
  gatts27@mailforce.net

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