A mobile wall comprising an alignment pin moveably supported on a crossbar adjacent a vertical support. The alignment pin is selectively moveable between a retracted position, in which the alignment pin is retracted into a first aperture, and an extended position, in which at least a portion of the alignment pin extends outwardly from the first aperture. The alignment pin is selectively receivable in an aperture of another mobile wall while in the extended position to align the mobile wall with the another mobile wall.