diff --git a/sf_manufacturing/models/stock.py b/sf_manufacturing/models/stock.py
index 4162ed68..b8cb237a 100644
--- a/sf_manufacturing/models/stock.py
+++ b/sf_manufacturing/models/stock.py
@@ -424,6 +424,8 @@ class ProductionLot(models.Model):
         """Generate `lot_names` from a string."""
         if first_lot.__contains__(display_name):
             first_lot = first_lot[(len(display_name) + 1):]
+        else:
+            first_lot = first_lot[-3:]
 
         # We look if the first lot contains at least one digit.
         caught_initial_number = regex_findall(r"\d+", first_lot)