diff --git a/pkg/common/db/controller/msg_test.go b/pkg/common/db/controller/msg_test.go
index 6b69c3b99..d7cf3db86 100644
--- a/pkg/common/db/controller/msg_test.go
+++ b/pkg/common/db/controller/msg_test.go
@@ -74,7 +74,7 @@ func Test_BatchInsertChat2DB(t *testing.T) {
 			})
 			for j, s := range arr {
 				if j == 0 {
-					fmt.Sprintf("channnelID: %d, arr[0]: %d", channelID, arr[j])
+					fmt.Printf("channnelID: %d, arr[0]: %s\n", channelID, arr[j])
 				}
 				filter := bson.M{"doc_id": "test:0"}
 				update := bson.M{