diff --git a/platypush/plugins/mqtt.py b/platypush/plugins/mqtt.py
index cd8cd5f5..9a3a6ade 100644
--- a/platypush/plugins/mqtt.py
+++ b/platypush/plugins/mqtt.py
@@ -11,6 +11,9 @@ class MqttPlugin(Plugin):
     with the MQTT protocol, see http://mqtt.org/
     """
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
     @action
     def send_message(self, topic, msg, host, port=1883, *args, **kwargs):
         """
diff --git a/platypush/plugins/pushbullet.py b/platypush/plugins/pushbullet.py
index c016ca18..c118253c 100644
--- a/platypush/plugins/pushbullet.py
+++ b/platypush/plugins/pushbullet.py
@@ -17,6 +17,9 @@ class PushbulletPlugin(Plugin):
         * **requests** (``pip install requests``)
     """
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
     @action
     def send_push(self, **kwargs):
         """
diff --git a/platypush/plugins/redis.py b/platypush/plugins/redis.py
index 0d07ccb8..38b369d4 100644
--- a/platypush/plugins/redis.py
+++ b/platypush/plugins/redis.py
@@ -12,6 +12,9 @@ class RedisPlugin(Plugin):
         * **redis** (``pip install redis``)
     """
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
     @action
     def send_message(self, queue, msg, *args, **kwargs):
         """