diff --git a/displaytest.py b/displaytest.py
index 3241798..c208559 100644
--- a/displaytest.py
+++ b/displaytest.py
@@ -15,6 +15,7 @@ from PIL import ImageFont, ImageDraw, Image
 
 # load more needed modules
 import time
+import sys
 
 #GPIO define pins
 RST_PIN  = 25 #Reset