diff --git a/lib/logstorage/pipe_fields.go b/lib/logstorage/pipe_fields.go
index eb6654b50..c3bcb38b4 100644
--- a/lib/logstorage/pipe_fields.go
+++ b/lib/logstorage/pipe_fields.go
@@ -54,9 +54,6 @@ func parsePipeFields(lex *lexer) (*pipeFields, error) {
 		if !lex.mustNextToken() {
 			return nil, fmt.Errorf("missing field name")
 		}
-		if lex.isKeyword(",") {
-			return nil, fmt.Errorf("unexpected ','; expecting field name")
-		}
 		field, err := parseFieldName(lex)
 		if err != nil {
 			return nil, fmt.Errorf("cannot parse field name: %w", err)
diff --git a/lib/logstorage/pipe_stats.go b/lib/logstorage/pipe_stats.go
index 56d8e418c..0d6e8eedc 100644
--- a/lib/logstorage/pipe_stats.go
+++ b/lib/logstorage/pipe_stats.go
@@ -550,9 +550,6 @@ func parseByFields(lex *lexer) ([]*byField, error) {
 			lex.nextToken()
 			return bfs, nil
 		}
-		if lex.isKeyword(",") {
-			return nil, fmt.Errorf("unexpected `,`")
-		}
 		fieldName, err := parseFieldName(lex)
 		if err != nil {
 			return nil, fmt.Errorf("cannot parse field name: %w", err)