Motherwell manager Stuart McCall has set about trying to solve the defensive "naivety" that he feels was the root cause of their defeat to Rangers.
The Clydesdale Bank Premier League leaders saw their wait for a win over the Glasgow club extend beyond 10 years after losing two sloppy goals in the Scottish Communities League Cup at Ibrox.
"Celtic we have pushed close on occasion and managed to beat them once, Rangers we have pushed close on occasions but not on other occasions," McCall said. "The other night I always said the first goal was going to be crucial and the atmosphere was like a big Old Firm game once they got the goal."
He added: "We didn`t play particularly well but it was through defensive errors, and that came through naivety."
The defeat against a Rangers team which had lost to Queen of the South in the Ramsdens Cup and remain without an away win in the Irn-Bru Third Division led to questions about Motherwell's record against the Old Firm as McCall previewed the visit of Celtic.
As well as the obvious answer that both Glasgow teams have bigger squads and resources, McCall pointed out they had drawn against Rangers last season and lost to a late Lee McCulloch goal, and also suffered two narrow defeats to Celtic, who his team last beat in February 2011.
McCall was perhaps angrier than he has ever been with his players after Wednesday`s defeat but he dismissed suggestions his team did not raise themselves for games against the Old Firm.
He added: "If it means beating Rangers and Celtic and finishing eighth in the league, then I certainly know where I`d rather be.
"Nobody likes getting beat against anybody and it would be nice to do better against the Old Firm.
"The group of players since I`ve been in charge have been excellent and you couldn't ask for any more of them."