diff --git a/python/ql/test/library-tests/frameworks/tornado/routing_test.py b/python/ql/test/library-tests/frameworks/tornado/routing_test.py
index 94824e6e862..1cff63921da 100644
--- a/python/ql/test/library-tests/frameworks/tornado/routing_test.py
+++ b/python/ql/test/library-tests/frameworks/tornado/routing_test.py
@@ -57,10 +57,10 @@ class PossiblyNotRouted(tornado.web.RequestHandler):
 
 class WebSocket(tornado.websocket.WebSocketHandler):
     def open(self, x): # $ requestHandler routedParameter=x
-        self.write_message("WebSocket open {}".format(x))
+        self.write_message("WebSocket open {}".format(x)) # $ MISSING: HttpResponse
 
     def on_message(self, data): # $ requestHandler routedParameter=data
-        self.write_message("WebSocket on_message {}".format(data))
+        self.write_message("WebSocket on_message {}".format(data)) # $ MISSING: HttpResponse
 
     def on_ping(self, data): # $ requestHandler routedParameter=data
         print("ping", data)