diff --git a/extra/memory/piles/piles-tests.factor b/extra/memory/piles/piles-tests.factor
index 11b6399ed4..4bb9cc20b3 100644
--- a/extra/memory/piles/piles-tests.factor
+++ b/extra/memory/piles/piles-tests.factor
@@ -1,3 +1,4 @@
+! (c)2009 Joe Groff bsd license
 USING: accessors alien destructors kernel math
 memory.piles tools.test ;
 IN: memory.piles.tests