TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4456 SUBJECT: Swift UVOT correction to GCN 4455 DATE: 06/01/09 18:51:00 GMT FROM: Simon Rosen at MSSL-UCL S. Rosen (MSSL), M. De Pasquale (MSSL) In GCN 4455, the typical upper limit for UVOT was quoted as about 18 while the source list was stated as being complete to about 19.0. We issue a correction here. The 3sigma upper limit estimate made at the XRT position of GRB 060109 is 19.0 while the list of sources is typically complete to about 18th magnitude.