diff --git a/mqtt_logger/__init__.py b/mqtt_logger/__init__.py
index 5f94c63..8753446 100644
--- a/mqtt_logger/__init__.py
+++ b/mqtt_logger/__init__.py
@@ -19,7 +19,11 @@ def main():
     Entry point for mqtt logger.
     '''
     logging.basicConfig(format=LOG_FORMAT, filename=OWN_LOG_FILE)
-    conn = mqtt.Mqtt(hostname='localhost', subscribe=['#'])
+    conn = mqtt.Mqtt(hostname='localhost', port=8883,
+                     ca_certs='/etc/letsencrypt/live/mqtt.blackfinn.de/chain.pem',
+                     certfile='/etc/letsencrypt/live/mqtt.blackfinn.de/cert.pem',
+                     keyfile='/etc/letsencrypt/live/mqtt.blackfinn.de/privkey.pem',
+                     subscribe=['#'])
     if conn.connect() is False:
         logging.error('couldn\'t connect...')
         return 1