Oracle SQL :Decode Usage

Problem

Table Name: XXEBIZ

SCODE

----------------

'EBIZU'

'EBIZD'

'EBIZT'

'MIN'

'FRE'

For the rows starting with EBIZ Want the result to be displayed as 'EBIZ' instead of its actual value. For the other records for other no need to change in displaying values

REQUIRED OUTPUT:

SCODE

----------------

'EBIZ'

'EBIZ'

'EBIZ'

'MIN'

'FRE'

select decode(substr(scode,1,2), 'EBIZ', 'EBIZ', str_code) from XXEBIZ;