diff --git a/syntax/markdown.nanorc b/syntax/markdown.nanorc
index fdd05137..9e497683 100644
--- a/syntax/markdown.nanorc
+++ b/syntax/markdown.nanorc
@@ -1,5 +1,8 @@
 ## Syntax highlighting for Markdown files.
 
+## Original authors:  Ryan Westlund and Benno Schulenberg
+## License:  GPL version 3 or newer
+
 syntax markdown "\.md$"
 comment "<!--|-->"