The present invention relates to a cam follower. The cam follower has two side walls (2, 3) which are connected to each other through a crossbar (4) on whose underside (5), on one end (6), a support (7) for a gas exchange valve is disposed, wherein the crossbar (4) has a recess (9) through which a roller (8) extends, the roller (8) is supported via a bearing (23) on a pin (10) seated in the side walls (2, 3) and is at least used for indirect cam start. The cam follow is characterized in that the roller (8) is so narrow that outer front ends (11, 12) of the roller are clearly spaced from and out of contact with longitudinal surfaces (13, 14) of the recess (9), wherein at least one guide extension (15, 16) projects from each of the longitudinal surfaces (13, 14) towards a central longitudinal plane of the cam follower, and the roller (8) is guided on inner sides (17, 18) of the at least one guide extension.