diff --git a/new-super-mario-bros-u-deluxe.md b/new-super-mario-bros-u-deluxe.md
index f95bcd9..4ad0adc 100644
--- a/new-super-mario-bros-u-deluxe.md
+++ b/new-super-mario-bros-u-deluxe.md
@@ -1,4 +1,5 @@
 New Super Mario Bros. U Deluxe is able to go in-game with playable speeds.
+Note that this game requires a firmware dump to go in-game, otherwise it will crash on the title screen.
 
 #### Issues
 * Selecting Videos in the main menu will freeze the game, likely due to an unimplemented applet.