2700 20160701171709.0 ASTROimport-857 Lampens, P. 2015 Brightening of Blazar S5 1803+78 We report significant brightening in the filter V of the blazar S5 1803+78 according to the following observations: 2015 03 18.187 V 15.47 2015 06 07.027 V 16.19 2015 06 17.018 V 16.40 2015 08 22.901 V 14.65 2015 08 29.911 V 14.24 The comparison star (18h00m33.88s +78 deg;28'33.5"), adopted from the AAVSO sequence, has mag 15.73 (V). Cauteren, P. V. The Astronomer's Telegram 7988 2015 http://esoads.eso.org/abs/2015ATel.7988....1L published in NONREF