paypal payment message translation bug

so i'm testing the paypal IPN's in sandbox at the moment and just completed my first test payment. hikashop succesfully sends a payment message but it is not fully translated into dutch although it should be. Take not of the BOLD parts. It sends the following in dutch.

"
<email subject>
Paypal betaling bericht: betaling Completed voor bestel nr W19

<email body>
Hallo
een paypal bericht werd ontvangen met de status Completed. De bestelling is nu confirmed

.....
"
while the bold words should be as followed

Completed >> Voltooid
confirmed >> bevestigd

affected strings:
PAYMENT_NOTIFICATION_STATUS="Hallo,<br/>Een %s bericht werd ontvangen met de status %s."
ORDER_STATUS_CHANGED="De bestelling is nu %s."

In the webshop backend the order status is correctly translated, just not in the payment message