diff --git a/docs/source/tour.rst b/docs/source/tour.rst
index a757e1d..89a495f 100644
--- a/docs/source/tour.rst
+++ b/docs/source/tour.rst
@@ -159,7 +159,7 @@ You can easily read a Request's session data, that can be trusted to have origin
 
 **Note**: if you are using this in production, you should pass the ``secret_key`` argument to ``API(...)``::
 
-    api = responder.API(secret_key=os.environ['SECRET_KEY']
+    api = responder.API(secret_key=os.environ['SECRET_KEY'])
 
 Using Requests Test Client
 --------------------------