diff --git a/photobooth.py b/photobooth.py
index bcaffb7..99af9c6 100755
--- a/photobooth.py
+++ b/photobooth.py
@@ -412,6 +412,7 @@ def setup_gpio():
 
 def handle_gpio(channel):
     """Interrupt handler for GPIO events"""
+    print("Channel " + channel + " triggered")
     display.trigger_event(gpio_pygame_event, channel)
 
 def teardown(exit_code=0):