diff --git a/gametest_rev1.py b/gametest_rev1.py
index 9bcf61b..a91efc1 100644
--- a/gametest_rev1.py
+++ b/gametest_rev1.py
@@ -259,7 +259,7 @@ def change_led_speed(colour, speed):
             return false
 
 def led_handler():
-        global timer_led_blink_toggle, timer_led_switched
+        global timer_led_blink_toggle, timer_led_switched, timer_led_updated
 
         # led blinking effect. can be toggled on or off by setting led_blink to true or false.
         # blinks every second-