The invention refers to a dosing mechanism for use in a drug delivery device (1) implementing a dialing mode and a dispensing mode, wherein the dosing mechanism comprises a dose button (40), a housing (10, 13, 30) and a determination unit, wherein the dose button (40) is activatable by the user for dose dispense causing displacement of an indicating element (38) connected to the housing (10, 13, 30) from a first position to a second position, wherein the determination unit is adapted such that it detects the indicating element (38) in its second position and thereby determines that the dosing mechanism is in the dispensing mode. With the invention it is possible to distinguish between the dialing mode and the dispensing mode. The invention further refers to a drug delivery device comprising the above dosing mechanism.
