diff --git a/dm/pkg/checker/conn_checker.go b/dm/pkg/checker/conn_checker.go
index e6fc4567ac..a051d94007 100644
--- a/dm/pkg/checker/conn_checker.go
+++ b/dm/pkg/checker/conn_checker.go
@@ -47,7 +47,7 @@ func newConnNumberChecker(toCheckDB *conn.BaseDB, stCfgs []*config.SubTaskConfig
 func (c *connNumberChecker) check(ctx context.Context, checkerName string, neededPriv map[mysql.PrivilegeType]priv) *Result {
 	result := &Result{
 		Name:  checkerName,
-		Desc:  "check if connetion concurrency exceeds database's maximum connection limit",
+		Desc:  "check if connection concurrency exceeds database's maximum connection limit",
 		State: StateSuccess,
 	}
 	baseConn, err := c.toCheckDB.GetBaseConn(ctx)