diff --git a/examples/protocols/mqtt/ssl/mqtt_ssl_example_test.py b/examples/protocols/mqtt/ssl/mqtt_ssl_example_test.py
index 3309ca4..51ac4e9 100644
--- a/examples/protocols/mqtt/ssl/mqtt_ssl_example_test.py
+++ b/examples/protocols/mqtt/ssl/mqtt_ssl_example_test.py
@@ -1,10 +1,7 @@
-from __future__ import print_function, unicode_literals
-
 import os
 import re
 import ssl
 import sys
-from builtins import str
 from threading import Event, Thread
 
 import paho.mqtt.client as mqtt
diff --git a/examples/protocols/mqtt/ws/mqtt_ws_example_test.py b/examples/protocols/mqtt/ws/mqtt_ws_example_test.py
index 72d4fa7..c24cfec 100644
--- a/examples/protocols/mqtt/ws/mqtt_ws_example_test.py
+++ b/examples/protocols/mqtt/ws/mqtt_ws_example_test.py
@@ -1,9 +1,6 @@
-from __future__ import print_function, unicode_literals
-
 import os
 import re
 import sys
-from builtins import str
 from threading import Event, Thread
 
 import paho.mqtt.client as mqtt
diff --git a/examples/protocols/mqtt/wss/mqtt_wss_example_test.py b/examples/protocols/mqtt/wss/mqtt_wss_example_test.py
index 9f8ab12..c0a1454 100644
--- a/examples/protocols/mqtt/wss/mqtt_wss_example_test.py
+++ b/examples/protocols/mqtt/wss/mqtt_wss_example_test.py
@@ -1,10 +1,7 @@
-from __future__ import unicode_literals
-
 import os
 import re
 import ssl
 import sys
-from builtins import str
 from threading import Event, Thread
 
 import paho.mqtt.client as mqtt