A dust cap adapted to fit over a fiber optic adapter. The dust cap includes a dust cap body having a light-entering end and an opposite indicating end. The dust cap body is shaped such that the light-entering end has an interference fit with the fiber optic adapter. A first gap-creating projection extends from the light-entering end, and a second gap-creating projection extends from the light-entering end. The dust cap also includes a light pipe running along a longitudinal axis of the dust cap body from just beyond the light-entering end to just beyond the indicating end.