A collapsible container includes a plurality of walls collapsible onto the base. At least one wall has a support pivotably and slidably mounted to an upper end portion thereof. The support is pivotable between a support position where it is partially supported on an adjacent wall and a retracted position. In the retracted position, the wall can be pivoted downward onto the base, with a portion of the support passing through a channel formed on the interior of the adjacent wall. As the wall is pivoted to the upright position, the support is automatically deployed into the support position by its engagement with the channel.