It was a touching moment for the actress, 55, who has won eight Emmys, including a record-breaking six in that category and five in a row for "Veep." But it was also a moment that left some fans confused.
Dreyfuss, 68, took to Twitter to dispel any worries.
"I'm actually not Julia Louis-Dreyfus' father. But I really appreciate all the concerned tweets," he wrote. That tweet instantly went viral, with almost 2,000 retweets.
Dreyfuss had a little fun with the mistake, retweeting fans, like one who wrote, "I can't stop laughing at the idea of ppl sending concerned tweets to @RichardDreyfuss even though they think he died."
Louis-Dreyfus ended her speech on a somber note, saying her father died on Friday, adding, "I'm so glad that he liked 'Veep,' because his opinion was the one that really mattered."
Later in the night, the comedic icon and former "Seinfeld" star wrote on Instagram, "Just happy & grateful & happy."