The internet saw its fair share of optical illusions and brain teasers in 2017, but none as festive as this. The brain teaser, created by Hungarian artist Gergely Dudás, requires users to find a greeting card in a sea of gift bags.

The illustrations were featured in Dudás’ book of holiday brain teasers titled “Bear’s Merry Book of Hidden Things.” If this puzzle looks a little familiar, there’s a reason for that. In 2015, Dudás shared a puzzle of a panda among snowmen on Facebook.

Did you find it? Do you want a hint? This is your last chance to close the tab if you don’t want a hint. If you haven’t found the answer yet, don’t worry; we have it here.

Others found the inaccuracy difficult to see, and I was one of the few who missed the tiny detail. When you see it, however, you’ll know immediately away from that something isn’t quite right!