Etabs Model Help

[thangcivil]

Hi guys,

I am new to etabs and trying to model a 6 stories building. However, I got unappropriated shear force diagram for the wall on grid 7 (between grid D and E) when I applied earthquake load on y direction. The shear force is negative at the top level while it should be positive through out the shear wall. This is my first etabs model so can you please have a look through out and please give me feedback. I really appreciate you assistance.

Cheers