diff --git a/clock/hardware/unicorn.py b/clock/hardware/unicorn.py
index 356bb1a..c31e850 100644
--- a/clock/hardware/unicorn.py
+++ b/clock/hardware/unicorn.py
@@ -3,6 +3,7 @@ import time
 import numpy
 try:
     import RPi.GPIO as GPIO
+    SETUP_FAIL = False
 except ImportError:
     from unittest.mock import Mock
     GPIO = Mock()