Identification of jets originating from c quarks is becoming more and more important for a wide variety of standard model physics as well as searches for physics beyond the standard model. Recently, the CMS Collaboration developed a charm jet identification algorithm, trained to discriminate against b jets and light-quark or gluon jets. In this report, this newly developed algorithm will be described and its performance on the proton-proton collision data recorded by the CMS detector at a center-of-mass energy of $\sqrt{s}$ = 13 TeV during 2015 is presented.