diff --git a/octomode.py b/octomode.py
index 258be31..1620346 100755
--- a/octomode.py
+++ b/octomode.py
@@ -37,7 +37,7 @@ class PrefixMiddleware(object):
             start_response('404', [('Content-Type', 'text/plain')])
             return ["This url does not belong to the app.".encode()]
 
-APP.wsgi_app = PrefixMiddleware(app.wsgi_app, prefix=APP.config['APPLICATION_ROOT'])
+APP.wsgi_app = PrefixMiddleware(APP.wsgi_app, prefix=APP.config['APPLICATION_ROOT'])
 
 # ---