diff --git a/doc/topics/configuration.rst b/doc/topics/configuration.rst
index cbd24484f0..458a2e8c60 100644
--- a/doc/topics/configuration.rst
+++ b/doc/topics/configuration.rst
@@ -645,6 +645,10 @@ Example::
     [wsgi ie]
     kwargs={'fix_attach': False}
 
+.. note::
+   The options can be set using environment variables with names like:
+   ``TRYTOND_WSGI_<MIDDLEWARE>__<NAME>``.
+
 
 .. _JSON-RPC: http://en.wikipedia.org/wiki/JSON-RPC
 .. _XML-RPC: http://en.wikipedia.org/wiki/XML-RPC
diff --git a/trytond/config.py b/trytond/config.py
index 4974721ae6..b44032fe3f 100644
--- a/trytond/config.py
+++ b/trytond/config.py
@@ -106,6 +106,8 @@ class TrytonConfigParser(configparser.ConfigParser):
                 section, option = key[len('TRYTOND_'):].lower().split('__', 1)
             except ValueError:
                 continue
+            if section.startswith('wsgi_'):
+                section = section.replace('wsgi_', 'wsgi ')
             if not self.has_section(section):
                 self.add_section(section)
             self.set(section, option, value)