RepRap Prusa extruder fan mount v2

After some failed experiments I designed this fan mount which fits onto the extruder motor. It fits my Greg's Hionged Accessible Extruder, but should also fit an Wade's Extruder.
I used this fan: http://www.dealextreme.com/p/cooling-fan-for-vga-video-display-card-4cm-4cm-15564