diff --git a/lib/pure/punycode.nim b/lib/pure/punycode.nim
index 4f35de4873..ab6501ed18 100644
--- a/lib/pure/punycode.nim
+++ b/lib/pure/punycode.nim
@@ -1,3 +1,11 @@
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2016 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
 
 import strutils
 import unicode