diff --git a/conf/defaults.cfg b/conf/defaults.cfg
index 023fa811..94fdfca6 100644
--- a/conf/defaults.cfg
+++ b/conf/defaults.cfg
@@ -53,7 +53,7 @@ max_attachment_size = 2097152
 loginless_ssh_fingerprints = false
 
 # Set cookietimeout in seconds.
-session_age = 1800
+session_cookie_age = 1800
 
 [filepaths]
 # The on disk location of media files (does nothing right now).
diff --git a/ratticweb/settings.py b/ratticweb/settings.py
index 6260f364..e8a0e043 100644
--- a/ratticweb/settings.py
+++ b/ratticweb/settings.py
@@ -233,7 +233,7 @@ def confgetbool(section, var, default):
 # django-user-sessions
 SESSION_ENGINE = 'user_sessions.backends.db'
 SESSION_EXPIRE_AT_BROWSER_CLOSE = True
-SESSION_COOKIE_AGE = int(config.get('ratticweb', 'session_age'))
+SESSION_COOKIE_AGE = int(config.get('ratticweb', 'session_cookie_age'))
 
 # Icon configuration
 CRED_ICON_JSON = 'db/icons.json'