diff --git a/1-js/02-first-steps/10-ifelse/article.md b/1-js/02-first-steps/10-ifelse/article.md
index 98b681d336..8264c69bcd 100644
--- a/1-js/02-first-steps/10-ifelse/article.md
+++ b/1-js/02-first-steps/10-ifelse/article.md
@@ -170,7 +170,7 @@ let accessAllowed = age > 18;
 ```js run
 let age = prompt('나이를 입력해주세요.', 18);
 
-let message = (age < 9) ? '아기야 안녕?' :
+let message = (age < 3) ? '아기야 안녕?' :
   (age < 18) ? '안녕!' :
   (age < 100) ? '환영합니다!' :
   '나이가 아주 많으시거나, 나이가 아닌 값을 입력 하셨군요!';