diff --git a/jwql/website/apps/jwql/monitor_models/dark_current.py b/jwql/website/apps/jwql/monitor_models/dark_current.py
index f3abdb7cc..0783d66d8 100644
--- a/jwql/website/apps/jwql/monitor_models/dark_current.py
+++ b/jwql/website/apps/jwql/monitor_models/dark_current.py
@@ -30,6 +30,7 @@
 from django.db import models
 
 from jwql.utils.constants import (
+    DEFAULT_MODEL_CHARFIELD,
     MAX_LEN_AMPLIFIER,
     MAX_LEN_APERTURE,
     MAX_LEN_DETECTOR,