diff --git a/collects/honu/parsers/lex.ss b/collects/honu/parsers/lex.ss
index bd9a758435..428f734bb3 100644
--- a/collects/honu/parsers/lex.ss
+++ b/collects/honu/parsers/lex.ss
@@ -242,7 +242,7 @@
       (syn-val lexeme 'default #f start-pos end-pos)]
 
      [lex:grouping
-      (syn-val lexeme 'parenthesis #f start-pos end-pos)]
+      (syn-val lexeme 'parenthesis (string->symbol lexeme) start-pos end-pos)]
 
      [lex:ident
       (syn-val lexeme 'identifier #f start-pos end-pos)]