Rangers' Kenny Miller wants appeals against two yellow cards
Rangers striker Kenny Miller thinks the rules should be changed to allow appeals against red cards if they are the result of two bookings.
It follows the dismissal of team-mate Andy Halliday in Monday's 2-0 Championship win over Greenock Morton.
Rangers think Halliday was wrongly booked for gesturing at rival fans after Barrie McKay had scored their side's second goal.
"The rule could definitely be looked at," said Miller.
"Whether it is right or wrong, and only the ref will know that, with gesturing - and I don't even think there was any gesture towards the opposition fans - I think sometimes common sense should prevail and there should be a case of looking at it if it is two yellow cards. "
Rangers manager Mark Warburton said after the game he was mystified by referee Barry Cook's decision, even after looking at television replays.
Halliday had a previous red card, following a clash with Hibernian's Fraser Fyvie last month, overturned on appeal.
However, the former Middlesbrough and Bradford City midfielder has no right of appeal this time because the Scottish Football Association will only reconsider incidents involving straight red cards.
It means Halliday will now be suspended for the Championship leaders' match against third-placed Falkirk on Saturday.
"After seeing the incident with Andy, I think there's a lot of sympathy for him," added Miller.
"When he first got sent off, I was angry because I thought - why has he given the ref an opportunity to send him off?
"But, when you see it again, there's no offensive gesture, there's no running towards opposition fans."