diff --git a/pkg/common/db/mysql_model/im_mysql_model/group_member_model.go b/pkg/common/db/mysql_model/im_mysql_model/group_member_model.go
index 289a157fc..d5b5c5ced 100644
--- a/pkg/common/db/mysql_model/im_mysql_model/group_member_model.go
+++ b/pkg/common/db/mysql_model/im_mysql_model/group_member_model.go
@@ -240,7 +240,7 @@ func GetJoinedGroupIDListByUserID(userID string) ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
-	var groupIDList []string = make([]string, len(memberList))
+	var groupIDList []string
 	for _, v := range memberList {
 		groupIDList = append(groupIDList, v.GroupID)
 	}