Following a speech given in Philadelphia to Democratic National Convention delegates by Bernie Sanders, his wife, Jane, was caught on a hot mic, saying, “They don’t know your name is being put in nomination. That’s the concern.”

The comment came just after Sanders told delegates on Monday that in order to defeat Donald Trump, “we have got to elect Hillary Clinton and Tim Kaine.”

Sanders’ instruction was met with a collective loud “No!” followed by boos before the room erupted in “We Want Bernie!” chants.

After the boos subsided, the senator’s wife, Jane Sanders, came on stage and made a curious statement that was accidentally caught on the microphone. Leaning in, Jane said, “They don’t know your name is going to be put in nomination. That’s the concern.”