ORA-00918: column ambiguously defined

I am getting error "ORA-00918: column ambiguously defined" while executing following query-

SELECT ei.emp_name, ci.comp_name
FROM comp_info ci
INNER JOIN emp_info ei
ON ci.comp_id = ei.comp_id
WHERE comp_id = 11;


I can't change last line 'WHERE comp_id = 11' as it is generated from background code.

Any workaround?