diff --git a/fab_access/main.py b/fab_access/main.py
index 3903aa7..054a4e8 100644
--- a/fab_access/main.py
+++ b/fab_access/main.py
@@ -135,6 +135,7 @@ def handle_msg(client: MQTTClient, userdata, msg):
 
 def main():
     global conn
+    global keycloak_admin
 
     mqtt_client = MQTTHelper(**config.get_mqtt_config())
     mqtt_client.subscribe("/rfid_reader/#", handle_msg)