diff --git a/problems/0491.递增子序列.md b/problems/0491.递增子序列.md
index e33a049d..c30d23f7 100644
--- a/problems/0491.递增子序列.md
+++ b/problems/0491.递增子序列.md
@@ -396,7 +396,7 @@ var findSubsequences = function(nums) {
 
 ```
 
-## TypeScript
+### TypeScript
 
 ```typescript
 function findSubsequences(nums: number[]): number[][] {
@@ -542,7 +542,7 @@ int** findSubsequences(int* nums, int numsSize, int* returnSize, int** returnCol
 }
 ```
 
-## Swift
+### Swift
 
 ```swift
 func findSubsequences(_ nums: [Int]) -> [[Int]] {
@@ -573,7 +573,7 @@ func findSubsequences(_ nums: [Int]) -> [[Int]] {
 ```
 
 
-## Scala
+### Scala
 
 ```scala
 object Solution {