An adjustable bed frame assembly includes a mattress retaining bracket secured to the adjustable bed frame assembly in a shipment orientation for shipping the adjustable bed frame assembly, wherein the mattress retaining bracket, when re-secured in a mattress securing orientation, stops the mattress from sliding during operation of the actuator. The retaining bracket may be secured to the mattress platform. In embodiments, the retaining bracket is secured to the head end of the mattress platform, while in other embodiments, the retaining bracket is secured to the foot end of the mattress platform.
