diff --git a/server/app.py b/server/app.py
index 083e6d5..7e3c44a 100644
--- a/server/app.py
+++ b/server/app.py
@@ -110,7 +110,6 @@ def connect_mqtt():
     return client
 
 def mqtt_publisher(ti_receiver):
-    tube_index_old = None
     # Create and start a thread for each universe
     mqtt_client = connect_mqtt()
     artnetBindIp = get_eth0_ip()