PR - Sibling name

[Urmit Patel]

Hello guys. I received my ITA under express entry CEC. I claimed points for sibling resident in canada. I need to prove relation with my sibling which the option is passport since it has both our parents name. But, my father's name don't match as my sibling has "Rakeshkumar" and my passport has " Rakeshbhai". Father's passport has "Rakeshkumar". Moreover, it is the same in our birth certificates as well. How can I go through this?