diff --git a/challenges/hard/53_casual_attention/challenge.html b/challenges/hard/53_casual_attention/challenge.html
index 1558f9d6..d67f3222 100644
--- a/challenges/hard/53_casual_attention/challenge.html
+++ b/challenges/hard/53_casual_attention/challenge.html
@@ -238,7 +238,7 @@ <h2>Example 2:</h2>
 \[
 \begin{bmatrix}
 3.0 & 4.0 \\
-5.0 & 6.0
+4.0 & 5.0
 \end{bmatrix}
 \]
 </p>