diff --git a/lesson-3.html b/lesson-3.html
index 1340472..0640d82 100644
--- a/lesson-3.html
+++ b/lesson-3.html
@@ -116,7 +116,7 @@ int main() {
   empty<long>(); // T=long
 }
             </pre>
-            <form data-challenge="1" data-answer="_Z5emptyIlEvT_">
+            <form data-challenge="1" data-answer="_Z5emptyIlET_v">
               <input class="quiz-input" />
               <button
                 data-challenge-submit="1"