diff --git a/store/models.py b/store/models.py
index f0933ca..6a47796 100644
--- a/store/models.py
+++ b/store/models.py
@@ -578,7 +578,7 @@ class Checklist(models.Model):
                 self.status_updated_at = timezone.now()
 
             # Invalidate old CDEK barcode PDF
-            if self.cdek_tracking != old_obj.cdek_tracking:
+            if not self.cdek_barcode_pdf or self.cdek_tracking != old_obj.cdek_tracking:
                 self.cdek_barcode_pdf.delete(save=False)
                 self.cdek_barcode_pdf = None