The date of the second Steel City derby of the city has been moved after Sky Sports chose to screen the match live.
The match at Bramall Lane has been brought forward to Friday January 12 with a 7.45pm kick off.
And it is not the only match featuring the Sheffield clubs over the festive period to be selected for live coverage.
Wednesday's home match with high flyers Wolverhampton Wanderers will be screened live at 7.45pm on Friday December 15.
Meanwhile, United's visit to Villa Park will now kick off at 5.30pm on Saturday December 23.