diff --git a/README.md b/README.md
index e3f5fb8..60e05f8 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ For non-commercial use only. See the file LICENSE for details. For commercial
 use, a license must be purchased from
 [http://www.coherentpdf.com](http://www.coherentpdf.com).
 
+It prints a little message to stderr about the non-commercial license.
 
 Functionality
 ---