diff --git a/docs/en/10-programming/06-connector/04-rust.md b/docs/en/10-programming/06-connector/04-rust.md
index 2e52afb6b0789a386f3b42890a7768c7da1ffbbe..322f0cceebd0fb96c90d8617c64a629965ec989e 100644
--- a/docs/en/10-programming/06-connector/04-rust.md
+++ b/docs/en/10-programming/06-connector/04-rust.md
@@ -127,7 +127,7 @@ In the application code, use `pool.get()? ` to get a connection object [Taos].
 ```rust
 let taos = pool.get()? ;
 ```
-# Connectors
+### Connectors
 
 The [Taos][struct.Taos] object provides an API to perform operations on multiple databases.