Fix GUI configuration

Change-Id: I5876bd59f2cd24e65c12702a49d1e1b6edc55c08
Reviewed-on: http://naan.mimuw.edu.pl:8001/88
Tested-by: Nebulostore Nebulostore <nebulostore@gmail.com>
Reviewed-by: Krzysztof Rzadca <krzadca@mimuw.edu.pl>
Tested-by: Krzysztof Rzadca <krzadca@mimuw.edu.pl>