diff --git a/lib/oven.py b/lib/oven.py
index 7192ce0..2959a12 100644
--- a/lib/oven.py
+++ b/lib/oven.py
@@ -5,6 +5,7 @@ import datetime
 import logging
 import json
 import config
+from display import TM1637
 
 log = logging.getLogger(__name__)