ARLINGTON (AP) – Christina Aguilera flubbed a line as she belted out the national anthem at the start of the Super Bowl Sunday night.

When she was supposed to sing the line “O’er the ramparts we watched, were so gallantly streaming,” she instead repeated an earlier line, with a slight variation.

READ MORE: Little Elm High School Students, Parents Asked To Attend Listening Session Following Protests About Sexual Assault Allegation

She sang “What so proudly we watched at the twilight’s last gleaming,” which is the same line from earlier in the song but with the word ‘watched’ instead of the word ‘hailed.’

The mistake immediately set social networks abuzz with people commenting on the error.

READ MORE: Tanker Truck Full Of Fuel Hangs Over Bridge After Collision At Loop 12, Shady Grove

Aguilera’s representative did not immediately return a call and e-mail seeking comment.

She’s not the first person to mess up the lines of “The Star-Spangled Banner.” In 2001, Macy Gray was famously booed for her off-kilter rendition of the national anthem.

She garbled the words at the Pro Football Hall of Fame exhibition game in Canton, Ohio, her home state. She later told The Associated Press: “That was definitely life’s most embarrassing moment.”

MORE NEWS: In Shadow Of Texas Gas Drilling Sites, Health Fears Escalate

(© Copyright 2011 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)