diff --git a/problems/0435.无重叠区间.md b/problems/0435.无重叠区间.md
index 830f0c7e..2bf1f4b0 100644
--- a/problems/0435.无重叠区间.md
+++ b/problems/0435.无重叠区间.md
@@ -72,7 +72,7 @@
 
 C++代码如下：
 
-```c++
+```CPP
 class Solution {
 public:
     // 按照区间右边界排序