diff --git a/mqtt_logger/__init__.py b/mqtt_logger/__init__.py
index 8753446..8a481b7 100644
--- a/mqtt_logger/__init__.py
+++ b/mqtt_logger/__init__.py
@@ -20,7 +20,6 @@ def main():
     '''
     logging.basicConfig(format=LOG_FORMAT, filename=OWN_LOG_FILE)
     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=['#'])