diff --git a/docs/presto.md b/docs/presto.md
index 92d0add..26ba470 100644
--- a/docs/presto.md
+++ b/docs/presto.md
@@ -82,6 +82,7 @@ NUM_LEDS = 7
 LED_PIN = 33
 
 lights = plasma.WS2812(NUM_LEDS, 0, 0, LED_PIN)
+lights.start()
 
 lights.set_hsv(0, 0.5, 1.0, 1.0)
 lights.set_rgb(1, 255, 255, 0)
@@ -102,4 +103,4 @@ Then you can simply:
 connection_successful = presto.connect()
 ```
 
-For tips on reporting connection status on-screen [see the wifi docs](wifi.md).
\ No newline at end of file
+For tips on reporting connection status on-screen [see the wifi docs](wifi.md).