diff --git a/2-python/ch06/3-1.py b/2-python/ch06/3-1.py
index f9477e9..e9c1e09 100644
--- a/2-python/ch06/3-1.py
+++ b/2-python/ch06/3-1.py
@@ -11,5 +11,5 @@ def reorderLogFiles(self, logs: List[str]) -> List[str]:
                 letters.append(log)
 
         # 두 개의 키를 람다 표현식으로 정렬
-        letters.sort(key=lambda x: (x.split()[1:], x.split()[0]))
+        letters.sort(key=lambda x: (x.split()[1], x.split()[0]))
         return letters + digits