diff --git a/parser/grammar/nonreservedwords.txt b/parser/grammar/nonreservedwords.txt
index 1fd5c69..46c05f5 100644
--- a/parser/grammar/nonreservedwords.txt
+++ b/parser/grammar/nonreservedwords.txt
@@ -72,7 +72,7 @@ void non_reserved_word():
   | <DESCRIPTOR: "DESCRIPTOR">
   | <DIAGNOSTICS: "DIAGNOSTICS">
   | <DISPATCH: "DISPATCH">
-  | <DOMAIN: "DOMAIN">
+  | <_DOMAIN: "DOMAIN">
   | <DYNAMIC_FUNCTION: "DYNAMIC_FUNCTION">
   | <DYNAMIC_FUNCTION_CODE: "DYNAMIC_FUNCTION_CODE">
   | <ENFORCED: "ENFORCED">