diff --git a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/boo-who.portuguese.md b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/boo-who.portuguese.md
index c432a492d2..5e0eb78338 100644
--- a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/boo-who.portuguese.md
+++ b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/boo-who.portuguese.md
@@ -69,6 +69,10 @@ booWho(null);
 <section id='solution'>
 
 ```js
-// solution required
+function booWho(bool) {
+  return typeof bool === 'boolean';
+}
+
+booWho(null);
 ```
 </section>