TITLE: GCN CIRCULAR NUMBER: 22032 SUBJECT: GRB 171020A: Correction of alpha in GCN 22031 DATE: 17/10/21 03:49:17 GMT FROM: Moskvitin Alexander at SAO RAS A. Moskvitin (SAO RAS), O. Spiridonova (SAO RAS), A. Volnova (IKI RAS) In our previous GCN 22031 we reported incorrect slope. The correct decay slope is about -0.6 +/- 0.2. We apologize for any confusion caused by the earlier report.