diff --git a/pkg/keyvisual/decorator/tidb.go b/pkg/keyvisual/decorator/tidb.go
index bd48e2a2be..0e3a655dc3 100644
--- a/pkg/keyvisual/decorator/tidb.go
+++ b/pkg/keyvisual/decorator/tidb.go
@@ -81,7 +81,7 @@ func (inOrder *tableInOrder) buildFromTableMap(m *sync.Map) {
 }
 
 // FindOne will find first table detail which id is between [fromId, toId).
-// Returns nil if not found any
+// Returns nil if not found any.
 func (inOrder *tableInOrder) findOne(fromID, toID int64) *tableDetail {
 	if fromID >= toID {
 		return nil