diff --git a/repository/result/result.go b/repository/result/result.go
index 52c1010..087de78 100644
--- a/repository/result/result.go
+++ b/repository/result/result.go
@@ -117,7 +117,7 @@ func (r *ResultRepository) UpdateAnswersStatus(ctx context.Context, accountID st
 func (r *ResultRepository) GetQuizResultsCSV(ctx context.Context, quizID uint64, reqExport GetQuizResDeps) ([]model.Answer, error) {
 	var results []model.Answer
 
-	mainQuery := `SELECT DISTINCT ON (a.question_id, a.session)
+	mainQuery := `SELECT DISTINCT ON (a.question_id, a.session, a.created_at, a.result)
 		a.id, a.content, a.question_id, a.quiz_id, a.fingerprint, a.session, a.result, a.created_at, a.new, a.deleted
 	FROM
 		answer a