Abstract: A refrigerator appliance includes a cabinet, a door pivotally attached to the cabinet, and a mullion bar pivotally attached to the door and having a guide pin. The mullion bar moves between a deployed position and a tucked position. A guide element is mounted to the cabinet and defines a recessed area. The guide element includes a deflectable member disposed in the recessed area and cooperating with a side wall of the recessed area to define an opening sized to receive the guide pin only when the mullion bar is in the tucked position. The deflectable member is deflectable upon contact with the guide pin to allow the guide pin within the recessed area when the mullion bar is in the deployed position.