diff --git a/hgext/highlight/__init__.py b/hgext/highlight/__init__.py
--- a/hgext/highlight/__init__.py
+++ b/hgext/highlight/__init__.py
@@ -1,3 +1,13 @@
+# highlight - syntax highlighting in hgweb, based on Pygments
+#
+#  Copyright 2008, 2009 Patrick Mezard <pmezard@gmail.com> and others
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+#
+# The original module was split in an interface and an implementation
+# file to defer pygments loading and speedup extension setup.
+
 """syntax highlighting in hgweb, based on Pygments
 
 It depends on the pygments syntax highlighting library:
diff --git a/hgext/highlight/highlight.py b/hgext/highlight/highlight.py
--- a/hgext/highlight/highlight.py
+++ b/hgext/highlight/highlight.py
@@ -1,4 +1,9 @@
-# highlight extension implementation file
+# highlight.py - highlight extension implementation file
+#
+#  Copyright 2007-2009 Adam Hupp <adam@hupp.org> and others
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
 #
 # The original module was split in an interface and an implementation
 # file to defer pygments loading and speedup extension setup.