"We good. We talked about it," Thomas said, via NFL Network's Tom Pelissero. "He's just a crucial part of this defense. We definitely need him out there."
Thomas was frustrated by Williams being a surprise inactive Sunday against the Browns due to a knee injury.
"I just wanted to see what was going on with him because I know he had practiced earlier in the week. I didn't know," Thomas said of the injury that kept Williams out. "It just kind of hit me out of the blindside. But hopefully, he'll play this week."
Baltimore hopes to have Williams back on the field Sunday afternoon for a pivotal matchup against the Pittsburgh Steelers. The DT, however, was held out of practice Wednesday.