diff --git a/changehc/delphi_changehc/update_sensor.py b/changehc/delphi_changehc/update_sensor.py
index 5061fc6ff..a91dec5ac 100644
--- a/changehc/delphi_changehc/update_sensor.py
+++ b/changehc/delphi_changehc/update_sensor.py
@@ -14,7 +14,7 @@
 
 # first party
 from .config import Config
-from .constants import NA, SMOOTHED, SMOOTHED_ADJ, SMOOTHED_ADJ_CLI, SMOOTHED_ADJ_FLU, SMOOTHED_CLI, SMOOTHED_FLU
+from .constants import SMOOTHED, SMOOTHED_ADJ, SMOOTHED_ADJ_CLI, SMOOTHED_ADJ_FLU, SMOOTHED_CLI, SMOOTHED_FLU
 from .sensor import CHCSensor