Dakota Johnson is single and ready to mingle, but there’s one dealbreaker she won’t tolerate in future prospects.

The “50 Shades of Grey” actor, who recently split from her longtime love, Coldplay frontman Chris Martin, laid out her biggest red flag in a video Q&A with Vogue Germany, shared on Tuesday.

“Men who wear flip-flops in public. Run,” Johnson said in her characteristically blunt manner.

Johnson previously revealed another dating nonnegotiable earlier this summer when doing press for her movie “Materialists,” in which she plays a matchmaker.

“Like, not an asshole?” the 36-year-old said during an early morning appearance on the “Today” show, as host Craig Melvin appeared slightly shocked at Johnson’s answer.