diff --git a/misp_modules/__init__.py b/misp_modules/__init__.py
index fa3c910..525bdc0 100644
--- a/misp_modules/__init__.py
+++ b/misp_modules/__init__.py
@@ -167,6 +167,7 @@ class ListModules(tornado.web.RequestHandler):
 
 
 class QueryModule(tornado.web.RequestHandler):
+    @tornado.gen.coroutine
     def post(self):
         global mhandlers
         jsonpayload = self.request.body.decode('utf-8')