Default [Q] Alternative sms app in MIUI won't work

Hi to all.
I' ve recently installed MIUI V5 3.7.12 and I have the following problem.
As an Aurora user, I used Go SMS Pro as my basic sms app. Although I' ve checked "Disable other message notification " box in Other settings in Go Sms, MIUI uses the stock Messaging app, when I have an incoming sms.
What could I do, so MIUI would use Go SMS as primary messaging app?