diff --git a/extra/svg/svg.factor b/extra/svg/svg.factor
index b5c5e96e90..6df7314653 100644
--- a/extra/svg/svg.factor
+++ b/extra/svg/svg.factor
@@ -1,3 +1,4 @@
+! (c)2009 Joe Groff, see BSD license
 USING: accessors arrays assocs fry kernel math math.affine-transforms math.constants
 math.functions math.parser math.vectors memoize peg.ebnf sequences sequences.squish
 splitting strings xml.data xml.utilities ;