diff --git a/codes/cpp/include/TreeNode.hpp b/codes/cpp/include/TreeNode.hpp
index 7c8f1708d..edab3d494 100644
--- a/codes/cpp/include/TreeNode.hpp
+++ b/codes/cpp/include/TreeNode.hpp
@@ -5,7 +5,7 @@
  */
 
 #pragma once
-
+#include<climits>
 /**
  * @brief Definition for a binary tree node
  *