SQL Update Statement

I am trying to update a column by removing 'mail' from the email addresses.  I use this:

Update employees2
Set email = (SELECT REPLACE(email,'mail.xxxx.edu','xxxx.edu')
from employees2);

However, I get this error message:
Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
The statement has been terminated.

How can I fix
Jack SeamanAsked:
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Steve WalesConnect With a Mentor Senior Database AdministratorCommented:
Just this should work:

Update employees2
Set email = REPLACE(email,'mail.xxxx.edu','xxxx.edu')

You don't need to select the data again.
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