Reset Proportional Edit Falloff range

Okay, so I know that using the scroll wheel of the mouse or PageUp/PageDown adjusts the size of the sphere of influence for the Proportional Edit tool, but I seem to have spun my mouse wheel too far in one direction, and the proportional edit tool now seems stuck at a small size. Is there a way to reset the sphere of influcence to the default size?

Restarting Blender should reset it…

Hey, I thought I tried that, but now that I try it again, that worked! Thanks!