An air line supplying charged air to a combustion engine comprising a compressor arrangement, wherein the compressor arrangement comprises: - a compressor unit comprising a housing including an air intake passage , a compressor wheel arranged in said air intake passage , and an additional air passage allowing recirculation of air from the air intake passage in a position radially outwardly of a part of the compressor wheel to an air conduit delivering an air flow to the air intake passage of the compressor unit in a position located at an average flow distance (D) from the compressor wheel , - a part of the additional air passage is defined by a return conduit having an extension between a downstream end connected to an opening 28 in the housing and an upstream end , the air conduit has a curved portion (9a 1 ) closed to the intake passage of the compressor unit , wherein the return conduit is configured to return air to an upstream position of said curved portion of the air conduit , characterized in that the upstream end of the return conduit is connected to an opening through the air conduit and - the average flow distance (D) is defined as a distance along a center axis in the air conduit , from a first plane (A1) transverse through the air conduit where the air opening is arranged, to a second transverse plane (A2) extending through a front surface of the compressor wheel , the average flow distance (D) corresponding to at least 1,5 times the inlet diameter (d) of the compressor wheel . - a compressor unit comprising a housing including an air intake passage , a compressor wheel arranged in said air intake passage , and an additional air passage allowing recirculation of air from the air intake passage in a position radially outwardly of a part of the compressor wheel to an air conduit delivering an air flow to the air intake passage of the compressor unit in a position located at an average flow distance (D) from the compressor wheel , - a part of the additional air passage is defined by a return conduit having an extension between a downstream end connected to an opening 28 in the housing and an upstream end , the air conduit has a curved portion (9a 1 ) closed to the intake passage of the compressor unit , wherein the return conduit is configured to return air to an upstream position of said curved portion of the air conduit , characterized in that the upstream end of the return conduit is connected to an opening through the air conduit and the air conduit has a curved portion (9a 1 ) closed to the intake passage of the compressor unit , wherein the return conduit is configured to return air to an upstream position of said curved portion of the air conduit , characterized in that the upstream end of the return conduit is connected to an opening through the air conduit and - the average flow distance (D) is defined as a distance along a center axis in the air conduit , from a first plane (A1) transverse through the air conduit where the air opening is arranged, to a second transverse plane (A2) extending through a front surface of the compressor wheel , the average flow distance (D) corresponding to at least 1,5 times the inlet diameter (d) of the compressor wheel . <EOS>