[IRCServices] Removing Nick from Topic

[Dan]

Does anyone know how to remove the appended nickname when services sets the
topic when entering a non-existant room? (Version 4.5.21 using the Unreal
IRCD)

E.g.

*** services.somewhere.com changes topic to 'Welcome (Dan)'

How can I prevent the (Dan) part being appended?

Thanks,

Dan