diff --git a/ChangeLog.txt b/ChangeLog.txt
index aa8f2108d6fa3e681e33f5b352ad6bfdd26828f4..a455b2c627469adc78ebc150ba12035173dcd153 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -28,6 +28,7 @@ v1.6.0 - 2021-xx-xx
   SSL. Closes #571,
 - Fix connecting with MQTT v5 to a broker that doesn't support MQTT v5.
   Closes #566.
+- Removed ancient Mosquitto compatibility class.
 
 
 v1.5.1 - 2020-09-22
diff --git a/src/paho/mqtt/client.py b/src/paho/mqtt/client.py
index 03fe328f1f38391054206d5b09f0989bb8663713..81d8ecbd213916f9571b254d351b1c8b49f935d1 100644
--- a/src/paho/mqtt/client.py
+++ b/src/paho/mqtt/client.py
@@ -3652,12 +3652,6 @@ class Client(object):
             return socket.create_connection(addr, timeout=self._connect_timeout, source_address=source)
 
 
-# Compatibility class for easy porting from mosquitto.py.
-class Mosquitto(Client):
-    def __init__(self, client_id="", clean_session=True, userdata=None):
-        super(Mosquitto, self).__init__(client_id, clean_session, userdata)
-
-
 class WebsocketWrapper(object):
     OPCODE_CONTINUATION = 0x0
     OPCODE_TEXT = 0x1