diff --git a/.gitignore b/.gitignore
index d6482b4..5813b6e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,7 @@ coverage.xml
 
 __pycache__
 tests/__pycache__
-*.pyc
+
 build
 responder.egg-info/
 dist/
diff --git a/docs/source/tour.rst b/docs/source/tour.rst
index b7462bb..089908a 100644
--- a/docs/source/tour.rst
+++ b/docs/source/tour.rst
@@ -185,7 +185,7 @@ WebSocket Support
 
 Responder supports WebSockets::
 
-    @api.route('/ws', websocket=True)
+    @api.ws_route('/ws')
     async def hello(ws):
         await ws.accept()
         await ws.send_text("Hello via websocket!")
diff --git a/responder/routes.py b/responder/routes.py
index fa00975..1183a99 100644
--- a/responder/routes.py
+++ b/responder/routes.py
@@ -77,9 +77,8 @@ class Route:
     def is_class_based(self):
         return hasattr(self.endpoint, "__class__")
 
-    @property
     def is_function(self):
-        is_callable = callable(self.endpoint)
+        routed = hasattr(self.endpoint, "is_routed")
         code = hasattr(self.endpoint, "__code__")
         kwdefaults = hasattr(self.endpoint, "__kwdefaults__")
-        return all((is_callable, code, kwdefaults))
+        return all((routed, code, kwdefaults))
diff --git a/setup.py b/setup.py
index 49a8d54..e92701b 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ required = [
     "python-multipart",
     "chardet",
     "apispec>=1.0.0b1",
-    "marshmallow>=3.0.0b7",
+    "marshmallow",
     "asgiref",
     "docopt",
     "itsdangerous",