Simulink: How come my wire is all bent instead of straight?

Every time I use the sum block, when I try to connect one of the inputs to an output wire from another block it bends at an angle instead of being straight. I've attached a picture to show you what I mean.

Even when I try to format the wire by clicking on it and dragging it, it still remains bent. I know this isn't a big problem, but when I have multiple sum blocks it looks pretty messy. I have no idea how to fix this.