Thumbs up [Q] Set Individual Ringtones to Contacts - WhatsApp issue

After I assign a custom or different stock ringtone to Contact A, the ringtone also gets played when a WhatsApp message is received from that contact. How can I stop this from occurring? Please guide.

Found the answer:
EDIT: go to whatsapp setting -> notifications -> uncheck contact ringtone (use contact's ringtone as notification ringtone)
[FONT="Arial"]【▀▄】 Phone ► Sony Xperia Z1
【▀▄】 ROM ► 14.3.A.0.681 KitKat
【▀▄】 Recovery ► Stock
【▀▄】 CID
【▀▄】 Kernel ► Stock
【▀▄】 MODS ► None