Abstract: A drum brake which comprises two brake shoes, an actuator situated between two first adjacent ends of the shoes and a fixed fulcrum block situated between the other two ends of the shoes. An adjuster is designed to increase the distance between the first ends of the shoes automatically as a function of the wear on the lining of the shoes. The adjuster comprises a lever pivoted at one end on a first of the shoes in the vicinity of the actuator. A pawl is pivoted on the first shoe and biased by a resilient member into engagement with a toothed sector formed on the other end of the lever. An operating member is responsive to an increase in the distance between the first ends of the shoes, so as to pivot the lever in the direction corresponding to adjustment of the brake. The resilient member comprises a spring of which at least part cooperates with the surface of the lever remote from the first shoe irrespective of the position of the adjuster.