Automatic currency conversion when money transferred to my bank account

[Cyaco]

Paypal automatically converts currency from USD to CAD when I attempt to transfer money to my bank account.

My paypal account is in USD

The linked bank account set to receive the transfer is also in USD

The only thing related to CAD is my country of residency (Canada)

How can I stop this automatic conversion from USD to CAD and keep it USD to USD ?

Help please !

[kernowlass]

@Cyaco 

Withdrawals to bank accounts are always in local currency.

[Cyaco]

Thank you for quick reply.  Any way to change this please.  I find the exchange rate quite expensive and unnecessary.