There's no room for error at Rangers training as Thursday's clash with Red Star Belgrade looms on the horizon.
Certainly not where Fashion Sakala is concerned as he was caught on camera refusing to let the standards slip.
Gio van Bronckhorst and his coaches have been putting the players through their paces in their final session before the Europa League last 16 showdown.
But Sakala took it upon himself to enforce the rules as he was snapped pulling up Scott Wright for a superfluous touch in the rondo.
James Sands was the piggy in the middle as his team-mates tested out their one touch passing game but Sakala drew it to a halt to shop someone in for an extra touch.
And Wright is then seen entering the frame with the expression of a man who can't believe he's just been grassed in by his mate.
Sakala is seen gesturing to his instep to demonstrate where Wright's erroneous touch took place.
But the Zambian then held his hands up to his moment of pedantry as he's heard saying "sorry bro!" to a wry smile from the winger.
Rangers are hoping to make the quarter-finals of the Europa League at the third time of asking having been eliminated by Bayer Leverkusen and Slavia Prague at this stage in successive years.
A tie with Red Star gives them a serious chance of doing just that and you can watch their final preparations in the video player above.
