diff --git a/problems/0206.翻转链表.md b/problems/0206.翻转链表.md
index 0c35f7d7..ec6f3dca 100644
--- a/problems/0206.翻转链表.md
+++ b/problems/0206.翻转链表.md
@@ -100,7 +100,7 @@ public:
 
 具体代码如下（带详细注释）：
 
-```c++
+```CPP
 class Solution {
 public:
     ListNode* reverseList(ListNode* head) {