diff --git a/mysql-compatibility.md b/mysql-compatibility.md
index 76bb4abdbeba6..ce0e99346216f 100644
--- a/mysql-compatibility.md
+++ b/mysql-compatibility.md
@@ -56,7 +56,6 @@ You can try out TiDB features on [TiDB Playground](https://play.tidbcloud.com/?u
 + `FULLTEXT` syntax and indexes [#1793](https://github.com/pingcap/tidb/issues/1793)
 + `SPATIAL` (also known as `GIS`/`GEOMETRY`) functions, data types and indexes [#6347](https://github.com/pingcap/tidb/issues/6347)
 + Character sets other than `ascii`, `latin1`, `binary`, `utf8`, `utf8mb4`, and `gbk`.
-+ SYS schema
 + Optimizer trace
 + XML Functions
 + X-Protocol [#1109](https://github.com/pingcap/tidb/issues/1109)