diff --git a/drivers/net/hns3/hns3_fdir.c b/drivers/net/hns3/hns3_fdir.c
index 693d9c731ad..4e1667d2f8d 100644
--- a/drivers/net/hns3/hns3_fdir.c
+++ b/drivers/net/hns3/hns3_fdir.c
@@ -618,7 +618,7 @@ static bool hns3_fd_convert_tuple(struct hns3_hw *hw,
 		break;
 	default:
 		hns3_warn(hw, "not support tuple of (%u)", tuple);
-		break;
+		return false;
 	}
 	return true;
 }