AutoCad 2D :: Turning Off 3D Modeling (shift And Pan)

I have put the Pan function on my middle mouse button. (If that wasn't already standard).

But every time I use shift to deselect and pan at the same time, it will rotate my 2D drawing in 3D.

Is there a way to turn that off? Without removing Pan from my middle mouse button.

I have turned off the View Cube, but that doesn't work.

I can of course try to take my finger off the shift key when i Pan, but I automatically do both commando's at the same time and it will be a pain to teach my self other ways.