Bristol City have warned fans against persistent standing at Ashton Gate.
The Robins host Middlesbrough this afternoon for their third home fixture so far this season, having also played Leeds United and QPR.
In a statement posted on the club's website, the Robins thanked fans for continuing to create a good atmosphere for home matches, but warned that persistent standing risks seeing Ashton Gate's capacity reduced.
The statement said: "During the summer break, the Sports Ground Safety Authority (SGSA) - which licences every stadium for spectators - and the Safety Advisory Group (SAG), met on numerous occasions and it has been made clear of the need to advise against persistent standing, which could lead to crowd collapse.
"Supporters should also be made aware that those who also fail to comply with SGSA regulations, may also see their club’s ground capacity reduced.
"The club would like to remind supporters to stay seated in the interest of health and safety and to allow all spectators to enjoy the games."
Ashton Gate head of security Dave Storr also revealed that some Robins fans had already been informed of the issue.
He said: "Supporters in the back rows in the Dolman and South Stands have received direct contact regarding this and the request is made to all supporters to please stay seated whilst the game is in progress.
"This is for safety reasons and to assist other supporters to enjoy the game. Persistent standing can result in ejection from the ground and a season card or match ticket being revoked.
"The SGSA has a responsibility to ensure Ashton Gate Stadium complies with the all-seater policy and if we fail to comply, the SGSA will ask the SAG - who issue our safety certificate - to consider reducing our capacity."
