diff --git a/overview.md b/overview.md
index 6cc4d2063e5d4..6b032abb824c2 100644
--- a/overview.md
+++ b/overview.md
@@ -16,7 +16,7 @@ TiDB (The pronunciation is: /'taɪdiːbi:/ tai-D-B, etymology: titanium) is an o
 
 - __MySQL compatibility__
 
-    Easily replace MySQL with TiDB to power your applications without changing a single line of code in most cases and still benefit from the MySQL ecosystem.
+    Easily replace MySQL with TiDB to power your applications without changing a single line of code [in most cases](sql/mysql-compatibility.md) and still benefit from the MySQL ecosystem.
 
 - __Distributed transaction__