diff --git a/pio/pio_exec.py b/pio/pio_exec.py
index 9c26283..4d2b689 100644
--- a/pio/pio_exec.py
+++ b/pio/pio_exec.py
@@ -14,8 +14,8 @@ def prog():
     pass
 
 
-# Construct the StateMachine, binding LED to the set pin.
-sm = rp2.StateMachine(0, prog, set_base=Pin("LED"))
+# Construct the StateMachine, binding Pin 25 to the set pin.
+sm = rp2.StateMachine(0, prog, set_base=Pin(25))
 
 # Turn on the set pin via an exec instruction.
 sm.exec("set(pins, 1)")