diff --git a/plinth/tests/functional/__init__.py b/plinth/tests/functional/__init__.py
index 2886b418c..61e208dbf 100644
--- a/plinth/tests/functional/__init__.py
+++ b/plinth/tests/functional/__init__.py
@@ -21,7 +21,7 @@ config = configparser.ConfigParser()
 config.read(pathlib.Path(__file__).with_name('config.ini'))
 
 config['DEFAULT']['url'] = os.environ.get('FREEDOMBOX_URL',
-                                          config['DEFAULT']['url'])
+                                          config['DEFAULT']['url']).rstrip('/')
 config['DEFAULT']['samba_port'] = os.environ.get(
     'FREEDOMBOX_SAMBA_PORT', config['DEFAULT']['samba_port'])