diff --git a/apprise/plugins/NotifyMQTT.py b/apprise/plugins/NotifyMQTT.py
index 376264eb..48094e5f 100644
--- a/apprise/plugins/NotifyMQTT.py
+++ b/apprise/plugins/NotifyMQTT.py
@@ -324,7 +324,7 @@ class NotifyMQTT(NotifyBase):
                         ciphers=None)
 
                     # Set our TLS Verify Flag
-                    self.client.tls_insecure_set(self.verify_certificate)
+                    self.client.tls_insecure_set(not self.verify_certificate)
 
                 # Establish our connection
                 if self.client.connect(
diff --git a/test/test_plugin_mqtt.py b/test/test_plugin_mqtt.py
index 31147d7a..15214c79 100644
--- a/test/test_plugin_mqtt.py
+++ b/test/test_plugin_mqtt.py
@@ -252,7 +252,7 @@ def test_plugin_mqtt_tls_connect_success(mqtt_client_mock):
             tls_version=ssl.PROTOCOL_TLS,
             ciphers=None,
         ),
-        call.tls_insecure_set(True),
+        call.tls_insecure_set(False),
         call.connect('localhost', port=8883, keepalive=30),
         call.loop_start(),
         call.is_connected(),
@@ -299,7 +299,7 @@ def test_plugin_mqtt_tls_no_verify_success(mqtt_client_mock):
     # Verify the right calls have been made to the MQTT client object.
     # Let's only validate the single call of interest is present.
     # Everything else is identical with `test_plugin_mqtt_tls_connect_success`.
-    assert call.tls_insecure_set(False) in mqtt_client_mock.mock_calls
+    assert call.tls_insecure_set(True) in mqtt_client_mock.mock_calls
 
 
 def test_plugin_mqtt_session_client_id_success(mqtt_client_mock):