A Fox affiliate in Oklahoma removed the single mention of evolution in the “Cosmos” science documentary that aired Sunday, according to media reports. The Raw Story, which first reported on the incident, says the station, KOKH-TV in Oklahoma City, indicated that the deletion was the result of an editing error.

The eagerly anticipated reboot of Carl Sagan’s ground-breaking “Cosmos” series, which debuted Sunday, briefly described human evolution during the last 10 minutes of the show. Host Neil deGrasse Tyson hinted at the theory, pointing at footsteps and noting, "Three and a half million years ago, our ancestors — yours and mine — left these traces. We stood up and parted ways from them. Once we were standing on two feet, our eyes were no longer fixated on the ground. Now, we were free to look up and wonder.”

But that portion of the narration was deleted from the KOKH telecast. Instead, the station replaced it with “an awkwardly inserted commercial for the evening news,” the story reports.

Some have suggested that the edit was purposefully made, given that Oklahoma is culturally conservative, notes the Los Angeles Times’ Show Tracker. But the station issued an apology Wednesday on Twitter, saying the edit was caused by human error.

Here’s a brief video clip showing the Oklahoma station’s edit of the program: