diff --git a/.gitignore b/.gitignore
index 4444ae1..8587834 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,9 +31,11 @@ go.work.sum
 # Editor/IDE
 .idea/
 
-# Plguin
+# Plugin
 # Intellij ANTLR plugin
 **/gen/
+# VSCode ANTLR plugin
+**/.antlr/
 
 # ANTLR generated files
 **/*.interp
diff --git a/postgresql/PostgreSQLParser.g4 b/postgresql/PostgreSQLParser.g4
index 16dc5c9..3c1cf4d 100755
--- a/postgresql/PostgreSQLParser.g4
+++ b/postgresql/PostgreSQLParser.g4
@@ -2813,7 +2813,7 @@ opt_hold
    ;
 /*
 TODO: why select_with_parens alternative is needed at all?
-i guess it because original byson grammar can choose selectstmt(2)->select_with_parens on only OPEN_PARENT/SELECT kewords at the begining of statement;
+i guess it because original bison grammar can choose selectstmt(2)->select_with_parens on only OPEN_PAREN/SELECT kewords at the begining of statement;
 (select * from tab);
 parse can go through selectstmt( )->select_no_parens(1)->select_clause(2)->select_with_parens(1)->select_no_parens(1)->select_clause(1)->simple_select
 instead of           selectstmt(1)->select_no_parens(1)->select_clause(2)->select_with_parens(1)->select_no_parens(1)->select_clause(1)->simple_select