diff --git a/server/app.py b/server/app.py
index cf1b69d..aa3863a 100644
--- a/server/app.py
+++ b/server/app.py
@@ -109,10 +109,10 @@ def connect_mqtt():
     return client
 
 def update_tube_index():
+    global result
     while True:
         cur = db.cursor()
         cur.execute("SELECT mac_address, universe, dmx_address FROM tubes")
-        global result
         result = cur.fetchall()
         cur.close()
         print("Updated index: "+str(result))