The "<" on french keyboard make a screenshot!

Hi.
I'm french, so I use the french keyboard to play Minecraft.
I changed controls to set them correctly.
( Z = W, Q = A, ... )
But they're a bug : For screenshots I set the "F2" button, but when I tape "<" in the chat, it make a screenshot. I use the " < " for a command on my server.

Thank you for help 🙂