Issue of having my mother name different in my passport

[ramalingappabt]

Hi,

I am planning to get tourist Visa to my parents to USA. I want to sponser them the Visa as I am having H1B. In my passport my mother name is 'Akkamma', but in my mother's passport she has the name 'Akkavva'.

Want to know if my mother name in my passport has to be corrected to 'Akkavva'(Similar to what she has her name in her passport) before I apply Visa for them. If I want to change, what is the procedure for doing this.

Thanks.

Regards,
Ram