diff --git a/responder/api.py b/responder/api.py
index eb4e60a..f63ba3e 100644
--- a/responder/api.py
+++ b/responder/api.py
@@ -316,6 +316,8 @@ class API:
 
         params = route.incoming_matches(req.url.path)
 
+        cont = True
+
         if route.is_function:
             try:
                 try:
diff --git a/responder/routes.py b/responder/routes.py
index 598ebf1..eb77071 100644
--- a/responder/routes.py
+++ b/responder/routes.py
@@ -1,5 +1,6 @@
 import re
 import functools
+import inspect
 from parse import parse
 
 
@@ -59,7 +60,7 @@ class Route:
 
     @property
     def is_class_based(self):
-        return hasattr(self.endpoint, "__class__")
+        return inspect.isclass(self.endpoint)
 
     @property
     def is_function(self):