Teeseract keep mixing a "simple" 9 in a 5. tessinput.tif attached

[François]

Hello,

Compare to you guys, i'm trying to achieve something quite simple.

I only detect one number from 1 to 19.

i use tesseract 3.05, wit this command line : 

tesseract -psm 8 image.tiff stdoutput digits

Please see the tessinput.tif file attached. Weirdly tesseract keep saying it's a 5 !

What could i do ?

Regards,