diff --git a/problems/0098.验证二叉搜索树.md b/problems/0098.验证二叉搜索树.md
index bb38ae35..db9c28ad 100644
--- a/problems/0098.验证二叉搜索树.md
+++ b/problems/0098.验证二叉搜索树.md
@@ -437,8 +437,6 @@ class Solution:
 ## Go
 
 ```Go
-import "math"
-
 func isValidBST(root *TreeNode) bool {
 	// 二叉搜索树也可以是空树
     if root == nil {