QGC / PX4 swapping motor outputs

While I was testing motors after ESC Calibration, I found a problem.

The motor which is connected to port 1 of pixhawk2 is not working
So, I want to swap port 1 and port 5.
Is there any solution that I can handle with QGC?
Or should I change code for pixhawk 2? If so, how can I do it?

Thank you.