Conventional positioning methods based on measurements of wireless device transmissions may fail to account for adjustments to uplink transmit timing made by the wireless device. Problems caused by this failure may become even more severe when multiple timing advances are applied on different carriers, in multi-carrier operation where the carriers are non-co-located. One example method for handling timing measurements used for positioning, according to several of the techniques detailed herein, begins with obtaining (810) one or more timing measurement values for timing measurements performed on radio signals transmitted by a wireless device. Information related to one or more transmit timing adjustments applied to radio signal transmissions by a wireless device is also obtained (820). Finally, one or more of the timing measurement values are compensated (830) with a compensation value, based on the obtained information related to the one or more transmit timing adjustments applied by the wireless device.