OPT: fixed issue #168
OPT: fixed issue #168

Former-commit-id: 5abb25d8ae39d51c2628971ec3f6bfcf8f33090c
Former-commit-id: d27b4224de334c4c82ea8b6925e1f5a8a3d758b5
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox