diff --git a/test/registry_tests.py b/test/registry_tests.py
index cf3c7e184..9f74bb7cb 100644
--- a/test/registry_tests.py
+++ b/test/registry_tests.py
@@ -295,7 +295,6 @@ class RegistryTestCaseMixin(object):
 
   def create_app(self):
     app.config['TESTING'] = True
-    app.config['DEBUG'] = True
     return app
 
   def setUp(self):