A wind turbine blade for a rotor of a wind turbine having a substantially horizontal rotor shaft, said rotor comprising a hub, from which the wind turbine blade extends substantially in a radial direction when mounted to the hub, the wind turbine blade having a longitudinal direction with a tip end and a root end and a transverse direction, the wind turbine blade further comprising: - a profiled contour including a pressure side and a suction side, as well as a leading edge and a trailing edge with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift, wherein - a surface mounted device (670, 770, 870, 970, 1070) is attached to a surface of the wind turbine blade, wherein - the surface mounted device (670, 770, 870, 970, 1070) is attached to the surface of the wind turbine blade via at least a first attachment part, which is connected to a part of the surface mounted device, characterised in that - the first attachment part comprises: - an outer attachment part (680, 780, 880, 980, 1080) providing a first bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the first bonding connection is an elastic bond, and - an inner attachment part providing a second bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the second bonding connection has a structural bond, - wherein the outer attachment part surrounds the inner attachment part. - a profiled contour including a pressure side and a suction side, as well as a leading edge and a trailing edge with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift, wherein - a surface mounted device (670, 770, 870, 970, 1070) is attached to a surface of the wind turbine blade, wherein - the surface mounted device (670, 770, 870, 970, 1070) is attached to the surface of the wind turbine blade via at least a first attachment part, which is connected to a part of the surface mounted device, characterised in that - a surface mounted device (670, 770, 870, 970, 1070) is attached to a surface of the wind turbine blade, wherein - the surface mounted device (670, 770, 870, 970, 1070) is attached to the surface of the wind turbine blade via at least a first attachment part, which is connected to a part of the surface mounted device, characterised in that - the first attachment part comprises: - an outer attachment part (680, 780, 880, 980, 1080) providing a first bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the first bonding connection is an elastic bond, and - an inner attachment part providing a second bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the second bonding connection has a structural bond, - an outer attachment part (680, 780, 880, 980, 1080) providing a first bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the first bonding connection is an elastic bond, and - an inner attachment part providing a second bonding connection between the surface mounted device (670, 770, 870, 970, 1070) and the surface of the wind turbine blade, wherein the second bonding connection has a structural bond, - wherein the outer attachment part surrounds the inner attachment part.