Gamma-ray spectrum of PKS 1510–089 during low state measured by Fermi-LAT (squares) and MAGIC (filled circles). The 68% confidence band of the extrapolation of the Fermi-LAT spectrum to sub-TeV energies is shown as a gray shaded region. The extrapolation in the MAGIC energy range assuming absorption in BLR following Böttcher & Els (2016) for the emission region located at the distance of 1, 0.82, and 0.74 of the outer radius of the broad line region is shown with black solid, blue dotted, and green dashed lines, respectively. Empty circles show the effect of the systematic uncertainties on the MAGIC spectrum.