Notts County boss Keith Curle has warned Yoann Arquin to curb his temper after the striker was sent off two minutes after scoring in his side's 2-1 win at Crewe.
Francois Zoko and Arquin both scored on their league debuts as 10-man County ended Crewe's 20-game unbeaten run.
But Ivorian Arquin was shown a straight red card for a petulant kick on Crewe defender Ashley Westwood two minutes after scoring County's second.
Mathias Pogba pulled one back as Crewe sprang into life and the Magpies were hanging on by the end with Lee Hughes clearing Westwood's effort off the line.
Curle said: "Yoann has got all the attributes that cause defences problems, but I'm mindful of the fact that he's got a petulant streak in him.
"He's got to get used to the fact that the better he plays the more the other side will try and wind him up and he's got to learn to take that side out of his game.
"But we have a lot of new players in the squad and it's winning games with 10 men against a tough crowd like this that builds team spirit."
Crewe manager Steve Davis was in positive mood despite seeing Alex's unbeaten streak come to an end.
Davis said: "I haven't had to prepare a losing speech for a while, but it couldn't go on forever.
"I'm glad it has happened now so we can put it behind us and move on."