diff --git a/backend/infra/document/parser/impl/builtin/parse_csv.go b/backend/infra/document/parser/impl/builtin/parse_csv.go
index db5191391b..ea66379e3a 100644
--- a/backend/infra/document/parser/impl/builtin/parse_csv.go
+++ b/backend/infra/document/parser/impl/builtin/parse_csv.go
@@ -46,7 +46,7 @@ func (c *csvIterator) NextRow() (row []string, end bool, err error) {
 		if errors.Is(e, io.EOF) {
 			return nil, true, nil
 		}
-		return nil, false, err
+		return nil, false, e
 	}
 
 	return row, false, nil