diff --git a/LICENSE b/LICENSE
index e77f75fb..46ba5fe2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,3 +1,6 @@
+psycopg and the GPL
+===================
+
 psycopg is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
@@ -7,6 +10,19 @@ As a special exception, specific permission is granted for the GPLed
 code in this distribition to be linked to OpenSSL and PostgreSQL libpq
 without invoking GPL clause 2(b).
 
+Note that the GPL was chosen to avoid proprietary adapters based on
+psycopg code. Using psycopg in a proprietary product (even bundling
+psycopg with the proprietary product) is fine as long as:
+
+ 1. psycopg is called from Python only using only the provided API
+    (i.e., no linking with C code and no C modules based on it); and
+
+ 2. all the other points of the GPL are respected (you offer a copy
+    of psycopg's source code, and so on.)
+
+Alternative licenses
+====================
+
 If you prefer you can use the Zope Database Adapter ZPsycopgDA (i.e.,
 every file inside the ZPsycopgDA directory) user the ZPL license as
 published on the Zope web site, http://www.zope.org/Resources/ZPL.
@@ -33,3 +49,4 @@ psycopg is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
+