The Hollywood Reporter has uncovered The Walking Dead creator Robert Kirkman's biggest regret when it comes to his blockbuster AMC drama.

"If I had to do it again, I wouldn't have done the CDC episode [at the end of Season 1]," he revealed. "It possibly gave away too much information and was such a big change very early on in the series." The information it revealed? That everyone -- everyone -- on Earth is already infected with the mysterious zombie-causing agent. That bit of information came a little bit later in the comics after Rick's band of survivors had already taken shelter in the prison.

"I feel like there might have been a better way to wrap up the first season," Kirkman continued. "It ended up being a fun episode. I love the character of Dr. Jenner and thought Noah [Emmerich] did an amazing job. But there were things in that episode that I think seem very much not of The Walking Dead world."

Kirkman also expressed regret over hinting in the episode that the French may be working on a cure. "I probably would have changed that stuff. I've been careful in the comic series to not say what's happening in other parts of the world. It's something that's going to be fun to explore in the spinoff series. But the fact that France is mentioned in that episode and other things like that, I probably would have steered away from that stuff if I had to do it all over again."

The Walking Dead's midseason finale airs Sunday at 9 p.m. ET/PT on AMC.