I think we all know that North Korea and South Korea have a pretty tumultuous relationship to say the least. They've had a few altercations in their time so it probably wasn't the best idea for Olympic officials to get their flags mixed up!
The North Korean women's football team decided to walk off the pitch at their Olympic match in Glasgow on Wednesday evening after their images were shown on a screen beside a South Korean flag. I hope someone gets fired for this boo-boo.
The game was delayed for over an hour as Olympic organisers apologised to officials for their error.
North Korean players only returned once the teams were announced again with each player's face then being displayed next to their nation's correct flag.
On Wednesday, South Korea are set to face North Korea in the first round of the men's Olympic table tennis team event.
Expect sparks to fly.