A locking mechanism for a movable member of an open roof construction for a vehicle comprises a stationary part having a first guide, a locking lever movable in a first direction drives said movable member and locks and an operating part movable in said first direction to control the locking lever. The locking lever comprises a first cam engaging the first guide comprising a first guide part extending substantially parallel to said first direction and a second guide part connecting to said first guide part in a second direction and capable of receiving the first cam of the locking lever to prevent movement of the locking lever. The operating part generates a force on the locking lever in/opposite the second direction when the operating part is moved in a first/second sense along said first direction, such that the first cam moves into/out of the locking second guide part.