A window fastener having a mounting base (21), a latching flap (12) moveably coupled thereto, a handle (14) and a latching tongue (15). the handle (14) is movable between first and second positions and is coupled to the latching tongue (15) so that the latching tongue moves the latching flap (18) when the handle (14) moves to a latching position. A movement inducing mechanism (34, 41) operable by the handle (14) causes movement of the flap (12) to occur when the handle is moved from the latching position to a non-latching position.