diff --git a/chassis/flask_nameko/proxies.py b/chassis/flask_nameko/proxies.py
index 24931b2..25f7c7e 100644
--- a/chassis/flask_nameko/proxies.py
+++ b/chassis/flask_nameko/proxies.py
@@ -60,10 +60,10 @@ class LazyServiceProxy(object):
 
 
 class FlaskPooledClusterRpcProxy(PooledClusterRpcProxy):
-    def __init__(self, app=None, connect_on_method_call=True):
+    def __init__(self, app=None, connect_on_method_call=True, extra_config=None):
         self._connect_on_method_call = connect_on_method_call
         if app:
-            self.init_app(app)
+            self.init_app(app, extra_config=extra_config)
 
     def init_app(self, app, extra_config=None):
         config = dict()