Shane Duffy scored his second goal in as many games for Celtic.
The on-loan Albion defender dragged his team level away to St Mirren in the Scottish Premier League.
His powerful header followed his debut strike in the recent 5-0 win at Ross County.
Celtic eventually won 2-1 although Odsonne Edouard had a penalty saved.
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Duffy also scored a late equaliser for the Republic of Ireland in Bulgaria recently.
Last night’s goal midway through the first half put his side back on course after a poor start.
He converted a superb free-kick by Ryan Christie.
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