[Exim] MailMan setup issue in 4.20

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I am trying to setup MailMan on a EXIM 4.2 server. When I restart I get
this message.

2003-07-08 15:37:08 Exim configuration error in line 462: option
"reguire_files" unknown

This is my router

mailman_router:
driver = accept
reguire_files = MAILMAN_HOME/lists/$local_part/config.pck
local_part_suffix_optional
local_part_suffix = -bounces: -bounces+*: -confirm+*: -join: -leave:
-owner: -request: -admin
driver = accept
check_local_user
transport = local_delivery

Van
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