Resilient fastener with means for preventing rotation

A resilient fastener (20) is provided for engaging a dog house coupling feature of a trim component. The resilient fastener has a mating member (30) for engaging a hole defined in a body panel. The resilient fastener includes a triangular mating feature (28) that is positioned relative to the coupling region. The triangular mating feature (28) engages at least one surface of the dog house structure to prevent rotation of the resilient fastener with respect the to the dog house. This reduces rotation of the resilient fastener with respect to the hole defined in the body panel.