diff --git a/gunicorn/__init__.py b/gunicorn/__init__.py
index 20f9c238..8cdb5be0 100644
--- a/gunicorn/__init__.py
+++ b/gunicorn/__init__.py
@@ -3,5 +3,5 @@
 # This file is part of gunicorn released under the MIT license. 
 # See the NOTICE for more information.
 
-version_info = (0, 9, 1)
+version_info = (0, 10, "0-dev")
 __version__ = ".".join(map(str, version_info))
diff --git a/gunicorn/workers/async.py b/gunicorn/workers/async.py
index 5476e970..11d07acc 100644
--- a/gunicorn/workers/async.py
+++ b/gunicorn/workers/async.py
@@ -60,7 +60,7 @@ class AsyncWorker(base.Worker):
         try:
             debug = self.cfg.get("debug", False)
             resp, environ = wsgi.create(req, sock, addr, self.address, debug)
-            respiter = self.app(environ, resp.start_response)
+            respiter = self.wsgi(environ, resp.start_response)
             if respiter == ALREADY_HANDLED:
                 return False
             for item in respiter:
diff --git a/gunicorn/workers/sync.py b/gunicorn/workers/sync.py
index 2f6d1fd1..7c616db7 100644
--- a/gunicorn/workers/sync.py
+++ b/gunicorn/workers/sync.py
@@ -91,9 +91,9 @@ class SyncWorker(base.Worker):
 
     def handle_request(self, req, client, addr):
         try:
-            debug = self.cfg.get("debug", False)
+            debug = self.cfg.debug or False
             resp, environ = wsgi.create(req, client, addr, self.address, debug)
-            respiter = self.app(environ, resp.start_response)
+            respiter = self.wsgi(environ, resp.start_response)
             for item in respiter:
                 resp.write(item)
             resp.close()