The present invention relates to a method (300) and a system (100) for guiding a robotic garden tool to a predetermined position. The robotic garden tool includes a control unit (104) and a sensor unit (102) to detect signals. The sensor unit (102) detects a first signal (110) from a first signal source (106) and the robotic garden tool follows the first signal (110) at a varying distance from the first signal source (106) that is less than or equal to a maximum distance to the first signal source, towards the predetermined position. Wherein, the varying distance is a function of the strength of the detected first signal (110). While detecting the first signal (110), the sensor unit may also detect a second signal (112) from a second signal source (108). The robotic garden tool follows the first signal (110) at a varying distance that is less than or equal to the maximum distance to the first signal source, wherein the maximum distance, at least in part, is now set based on the strength of the detected second signal (112), to reach a predetermined position.