Fox News anchor Megyn Kelly believes Roger Ailes would still be her boss if former colleague Gretchen Carlson had not sued him for sexual harassment.

Appearing Tuesday on ABC’s “Good Morning America,” the first stop on the tour for her new book “Settle for More,” Kelly noted that Fox contracts have clauses preventing on-air talent from filing lawsuits. Carlson, who believed that Ailes hurt her career because she rebuffed his sexual advances, went public with her complaint after her deal with Fox News expired. The suit, which has been settled, led to an internal investigation and the departure of Ailes in July.

“Gretchen filing publicly was a big deal and an important step in this whole process,” Kelly told “GMA.”

When asked if Ailes would still be running the news channel if Carlson’s lawsuit had not been filed, Kelly said, “I think so.”

Kelly became a key player in the investigation of Carlson’s charges when she revealed to Lachlan Murdoch, co-chairman at Fox News parent 21st Century Fox, that Ailes allegedly harassed her early in her tenure at the network.