Bobby Lashley and James Thompson are apparently just not meant to rematch. An injury has forced Thompson out of next week’s Bellator 138 bout with Lashley and Dan Charles has stepped up as a replacement.

Bellator officials confirmed the switch to MMAjunkie.

Bellator 138 takes place at Scottrade Center in St. Louis, Miss. The newly booked heavyweight matchup between Lashley (12-2 MMA, 2-0 BMMA) and Charles (9-2 MMA, 2-0 BMMA) will remain on the Spike TV-televised main card following prelims on MMAjunkie.

The specific nature of Thompson’s injury is unknown, but it is apparently bad enough to scratch a scheduled Bellator MMA fight with Lashley for the second time in fourth months. The two were also supposed to fight at Bellator 134 in February, but an injury to Lashley prevented him from making the date.

Charles will now step up in what is unquestionably the most notable fight of his career. The 29-year-old joined Bellator last year and has got off a strong start to his career with the organization by winning back-to-back fights. He’ll look to push his winning streak to three at Bellator 138.

Lashley will also make his third Bellator appearance at the event. He strung together consecutive finishes to set up the rematch with Thompson after the pair first met in 2012. Thompson won the original fight by unanimous decision, but now the rematch will have to wait even longer.

For more on Bellator 138, check out the MMA Rumors section of the site.