diff --git a/extra/lisp/parser/parser.factor b/extra/lisp/parser/parser.factor
index ec079265bc..7f03846044 100644
--- a/extra/lisp/parser/parser.factor
+++ b/extra/lisp/parser/parser.factor
@@ -1,3 +1,5 @@
+! Copyright (C) 2008 James Cash
+! See http://factorcode.org/license.txt for BSD license.
 USING: kernel peg.ebnf peg.expr math.parser sequences arrays strings
 combinators.lib ;