Noticed something worrying about my 24" monitor

[omgitsfrankee]

So I recently bought an HP Flat 24" FHD monitor (HP 24ea), and noticed a very slight curvature in the screen, the model number is X6W26AA.
Is there something wrong with monitor or was the curvature made on purpose?

Thanks in advance.

 

[Cycloid Torus]

Promo photos don't show curves... check with HP