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 / Updated  / Source: TODAY
By Erin Clements

Taylor Swift knows how to "Shake It Off" — except when an SAT prep book dares to misquote her.

A fan recently brought the error to the singer's attention, posting an image of the offending page from a Princeton Review book on Tumblr.

"Pop lyrics are a great source of bad grammar," reads a passage, which goes on to list a series of grammatically incorrect lines from hit songs by Katy Perry, Whitney Houston, Lady Gaga, Swift and other stars.

Taylor Swift / Tumblr

But the words attributed to Swift, from her 2009 song "Fifteen" — "Somebody tells you they love you, you got to believe ‘em” — are not the actual lyrics.

In a Tumblr post on Monday, Swift was quick to note that the correct line is "Somebody tells you they love you, you’re gonna believe them."

She added: "Not the right lyrics at all pssshhhh. You had one job, test people. One job."

No word on what the educational company's stance is on the word "gonna."