diff --git a/puzzles.but b/puzzles.but
index 5180907..cb4879b 100644
--- a/puzzles.but
+++ b/puzzles.but
@@ -3376,7 +3376,7 @@ by Michal Shomer. The implementation is loosely based on
 
 \H{mosaic-controls} \I{controls, for Mosaic}Mosaic controls
 
-To play Unruly, click the mouse in a square to change its colour.
+To play Mosaic, click the mouse in a square to change its colour.
 Left-clicking an empty square will turn it black, and right-clicking
 will turn it white. Keep clicking the same button to cycle through the
 three possible states for the square.