diff --git a/examples/external_devices_examples/pushbot_ethernet_example.py b/examples/external_devices_examples/pushbot_ethernet_example.py
index 852089e..eea29f4 100644
--- a/examples/external_devices_examples/pushbot_ethernet_example.py
+++ b/examples/external_devices_examples/pushbot_ethernet_example.py
@@ -82,7 +82,7 @@
     ))
 
 retina_viewer = p.external_devices.PushBotRetinaViewer(
-    retina_resolution, pushbot_retina.label, p)
+    retina_resolution, pushbot_retina.label)
 p.external_devices.activate_live_output_for(
     pushbot_retina, database_notify_port_num=retina_viewer.port)
 
diff --git a/examples/external_devices_examples/pushbot_light_follower.py b/examples/external_devices_examples/pushbot_light_follower.py
index ef0052f..a932edd 100644
--- a/examples/external_devices_examples/pushbot_light_follower.py
+++ b/examples/external_devices_examples/pushbot_light_follower.py
@@ -41,7 +41,7 @@
 retina_label = "Retina"
 
 retina_viewer = p.external_devices.PushBotRetinaViewer(
-    retina_resolution, retina_label, p)
+    retina_resolution, retina_label)
 
 # Simulate with 1 ms time step
 p.setup(1.0)
diff --git a/examples/external_devices_examples/pushbot_spinnaker_link_example.py b/examples/external_devices_examples/pushbot_spinnaker_link_example.py
index ba9cce6..3043752 100644
--- a/examples/external_devices_examples/pushbot_spinnaker_link_example.py
+++ b/examples/external_devices_examples/pushbot_spinnaker_link_example.py
@@ -81,7 +81,7 @@
     label="Retina")
 
 retina_viewer = p.external_devices.PushBotRetinaViewer(
-    retina_resolution, pushbot_retina.label, p)
+    retina_resolution, pushbot_retina.label)
 p.external_devices.activate_live_output_for(
     pushbot_retina, database_notify_port_num=retina_viewer.port)