diff --git a/mk/os-Linux.mk b/mk/os-Linux.mk
index c79bb576..6192c2c7 100644
--- a/mk/os-Linux.mk
+++ b/mk/os-Linux.mk
@@ -1,4 +1,5 @@
-# Copyright 2008 Roy Marples
+# Copyright 2008 Roy Marples <roy@marples.name>
+# All rights reserved. Released under the 2-clause BSD license.
 
 CFLAGS+=	-D_BSD_SOURCE -D_XOPEN_SOURCE=600
 LIBDL=		-Wl,-Bdynamic -ldl