diff --git a/directory/models.py b/directory/models.py
index aa73e1146d..7e24a520af 100644
--- a/directory/models.py
+++ b/directory/models.py
@@ -1023,8 +1023,8 @@ def as_json(fraction) -> dict:
         result = {
             "pk": fraction.pk,
             "title": fraction.title,
-            "unit": fraction.unit,
-            "variants": fraction.variants.get_variants(),
+            "unit": fraction.unit.title if fraction.unit else '',
+            "variants": fraction.variants.get_variants() if fraction.variants else '',
             "order": fraction.sort_weight,
             "ecpCode": fraction.ecp_id,
             "fsli": fraction.fsli,