diff --git a/modules/lib/simple_tildagon.py b/modules/lib/simple_tildagon.py
index 530051e..689433c 100644
--- a/modules/lib/simple_tildagon.py
+++ b/modules/lib/simple_tildagon.py
@@ -20,7 +20,7 @@ def set(led_number, state):
         # TODO : Ideally shouldn't need to run _setup_leds each use of set_led
         led._setup_leds()
 
-        tildagonos.leds[led_number-1] = state
+        tildagonos.leds[led_number] = state
         tildagonos.leds.write()