diff --git a/bin/dump_queue.py b/bin/dump_queue.py
index 3585064..9e31619 100755
--- a/bin/dump_queue.py
+++ b/bin/dump_queue.py
@@ -15,7 +15,7 @@ def print_and_ack(body, message):
     print(body['url'])
     message.ack()
 
-with Connection(sys.argv[1]) as conn:
+with Connection(sys.argv[1] if len(sys.argv) > 1 else "amqp://guest:guest@localhost:5672//") as conn:
     with conn.Consumer(requests_queue, callbacks=[print_and_ack]) as consumer:
         while True:
             conn.drain_events()
diff --git a/umbra/umbra.py b/umbra/umbra.py
index 30e7d85..b449d1a 100755
--- a/umbra/umbra.py
+++ b/umbra/umbra.py
@@ -70,7 +70,7 @@ class Umbra:
 
 		with self.browser_lock:
 			self.send_command(method="Network.enable")
-			self.send_command(method="Runtime.evaluate", params={"expression":"document.location = '%s';" % url})
+			self.send_command(method="Page.navigate", params={"url": url})
 
 			# XXX more logic goes here
 			time.sleep(10)