Craig Levein is confident that Uche Ikpeazu's injury will not rule him out of the Scottish Cup final in three weeks' time.
The 24-year-old striker was forced off immediately after half-time but the manager confirmed the substitution was just a precaution.
“Uche’s hamstring was tight at half-time - he could go back out and try it but he felt it tighten up again, so we told him if he felt it to just come off," the manager revealed.
"I’m quite confident we don’t have any serious damage there. He didn’t feel anything go."
"If he recovers in ten days I’ll consider him for the Celtic game, but he shouldn’t be a concern for the Cup final. I don’t want to take any risks as I’ve already got Peter Haring who needs a game before the final, if he’s even fit to make it."
It was the beginning of a disappointing afternoon for the Jambos, who were again beaten at home against Kilmarnock by a late goal.
“I could have written the script," Craig said. "I thought there was nothing in the match at all.
"I can’t complain about the effort our players put in. We had spells where we played decent stuff, and they counter well and do well from set pieces, and we’ve succumbed to a set-piece which we didn’t clear.
"I don’t know if that little bit extra they’ve got to play for had an impact or not, but I said to the players afterwards that I couldn’t say they were better than us or vice-versa, it came down to one goal and they got it.”