Fixed: g-i-installation_debian_jessie_gnome_brltty/11

[jenkins]

See 
https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/11/ 
and 
https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/11//console
 and 
https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/11//artifact/results/
 if there are any.