R12.1.3 after upgrade of DB to 11.2.0.4, listener.ora file shows Listener name as LISTENER and not s

Running R12.1.3 . Upgraded database from 10.2.0.5 to 11.2.0.4 on 32bit RHEL4.  Now we have 2 environments :

Old R12.1.3 env:

Host                                wiresm

Database sid name wiresmig

Listener name         wiresmig

db 10.2.0.5

New R12.1.3 env (cloned from old env and db upgraded) :

Host                                wiresm1

Database sid name    wiresmig

Listener name                listener

db 11.2.0.4

Old env wiresm:

/r05/oracle/db/tech_st/10.2.0/network/admin/listener.ora:

WIRESMIG =

(DESCRIPTION_LIST =

(DESCRIPTION =

      (ADDRESS = (PROTOCOL = TCP)(HOST = wiresm.dnr.state.mn.us)(PORT = 1521))

)

)

SID_LIST_WIRESMIG =

(SID_LIST =

(SID_DESC =

      (ORACLE_HOME= /r05/oracle/db/tech_st/10.2.0)

      (SID_NAME = wiresmig)

)

)

STARTUP_WAIT_TIME_WIRESMIG = 0

CONNECT_TIMEOUT_WIRESMIG = 10

TRACE_LEVEL_WIRESMIG = OFF