Tarek El Moussa recently made a surprising confession, revealing that he once accidentally called his wife, Heather Rae El Moussa, by his ex-wife Christina Haack’s name.

The real estate mogul, 43, shared this amusing yet slightly awkward moment in a behind-the-scenes video for The Flip Off,

the new HGTV show featuring Tarek, Heather, and Christina.

A Playful On-Set Moment

The revelation came as Tarek and Heather were joking around with their go-to contractor, Bryan,

while working on a home renovation. In an Instagram clip shared by the couple, Heather teased Bryan for mistakenly calling her “Christina” during the project.

“Oh, the bathrooms are free now!” Heather quipped, trying to get Bryan to own up to the slip-up on camera. After some playful back-and-forth, she exclaimed, “[Bryan] called me Christina!”

Rather than letting Bryan take all the heat, Tarek jumped in to admit that he had once made the same mistake. Trying to make Bryan feel better, he confessed, “I did that one time. I’m lucky to be alive!”

Bryan, however, wasn’t convinced it only happened once, shooting back, “I’m sure you’ve done it more than one time!”

Tarek insisted, “No, just once. It was more than enough!”