diff --git a/plinth.py b/plinth.py
index c4299a51d..e7ae409bc 100755
--- a/plinth.py
+++ b/plinth.py
@@ -186,7 +186,7 @@ def configure_django():
         ROOT_URLCONF='urls',
         SESSION_ENGINE='django.contrib.sessions.backends.file',
         SESSION_FILE_PATH=sessions_directory,
-        STATIC_URL=os.path.join(cfg.server_dir, 'static/'),
+        STATIC_URL=cfg.server_dir + '/static/',
         TEMPLATE_CONTEXT_PROCESSORS=context_processors,
         TEMPLATE_DIRS=template_directories)