A control mechanism for an endoscope (1) comprising a Bowden cable, the Bowden cable has an outer guide tube (9) having a first length between a proximal end and a distal end of said outer guide tube (9) and an inner pull-wire (15) having a second length between a proximal end and a distal end of said inner pull-wire (15). The second length is longer than the first length. The outer guide tube (9) comprises a first guide tube section (9&prime) and a second guide tube section, where said first guide tube section (9&prime) has plastic and elastic properties, which are different from the plastic and elastic properties of said second guide tube section (9&Prime).