diff --git a/api/service/QuestionQa.go b/api/service/QuestionQa.go
index b707a96..bb7720b 100644
--- a/api/service/QuestionQa.go
+++ b/api/service/QuestionQa.go
@@ -382,7 +382,7 @@ func (r *QuestionQaService) PutQuestionQa(qaId int64, req requests.PutQuestionQa
 
 		repeatQaIdStr := strings.Join(repeatQaId, ",")
 		if repeatQaIdStr != questionQa.RepeatQaId {
-			questionQaData["repeat_qa_id"] = req.RepeatQaId
+			questionQaData["repeat_qa_id"] = repeatQaIdStr
 		}
 	}