Porto have been warned over the treatment of Rangers fans during last season's Europa League clash.
The Ibrox side lost the game out in Portugal by three goals to one after Djeidi Gassama's early opener was cancelled out by three quick calls.
After the game, there were concerns over the treatment of travelling fans after reports they were held inside the stadium for over two hours.
Now UEFA have handed out a sanction, issuing a "warning" for "retention of supporters in the stadium" and breach of "Art. 46.01(e) UEFA Safety and Security Regulations."
The Rangers Fan Advisory Board responded to the ruling with a statement: "We are pleased to see that today UEFA have sanctioned FC Porto for their treatment of the Rangers support after the game in January.
Read more
Derek McInnes discusses Rangers' transfer plans amid 'several ongoing conversations' Derek McInnes provides update on Rangers' pre-season plans amid possible change
"Whilst we think the sanction of a warning doesn’t go nearly far enough, at least the feedback of the Rangers support has been listened to.
"We understand that feedback from our fans was central to UEFA considering the matter.
"We will continue to work with our fellow fans to push for significantly better consideration of travelling fans across Europe."
Rangers released their own statement back in January, which said: "Following the match in Porto, we've received multiple reports from supporters and staff about issues in and around the stadium.
"That's not what anyone who travelled to support Rangers should have had to deal with, and we share the concern, anger and frustration felt by those affected."
