Abstract: A search for single top quark production through flavor-changing neutral currents in the anomalous tq vertex is presented in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on a data-set corresponding to an integrated luminosity of 19.1 fb-1 collected with the CMS detector. The search is performed on events with one isolated muon and jets in the final state. No evidence for a signal is observed. Upper limits at 95% confidence level on the strengths of the anomalous couplings at leading order for vertices involving a top quark, a photon, and another up-like quark are set.