The observations we reported in ATel #2166 were actually of nova M31 2009-08b, not 2009-08d. Therefore, ATel #2166 confirms the nova nature of nova M31 2009-08b, located 965" east and 1962" north of the center of M31. See http://www.cfa.harvard.edu/iau/CBAT_M31.html#2009-08b