diff --git a/IPython/frontend/html/notebook/handlers.py b/IPython/frontend/html/notebook/handlers.py
index aa07bb8..457d542 100644
--- a/IPython/frontend/html/notebook/handlers.py
+++ b/IPython/frontend/html/notebook/handlers.py
@@ -416,7 +416,7 @@ class AuthenticatedZMQStreamHandler(ZMQStreamHandler):
     def open(self, kernel_id):
         self.kernel_id = kernel_id.decode('ascii')
         try:
-            cfg = self.application.ipython_app.config
+            cfg = self.application.config
         except AttributeError:
             # protect from the case where this is run from something other than
             # the notebook app:
diff --git a/IPython/frontend/html/notebook/notebookapp.py b/IPython/frontend/html/notebook/notebookapp.py
index 3fa6be4..fd358a7 100644
--- a/IPython/frontend/html/notebook/notebookapp.py
+++ b/IPython/frontend/html/notebook/notebookapp.py
@@ -187,6 +187,7 @@ class NotebookWebApplication(web.Application):
         self.cluster_manager = cluster_manager
         self.ipython_app = ipython_app
         self.read_only = self.ipython_app.read_only
+        self.config = self.ipython_app.config
         self.log = log
         self.jinja2_env = Environment(loader=FileSystemLoader(os.path.join(os.path.dirname(__file__), "templates")))