diff --git a/bookwyrm/migrations/0101_auto_20210929_1847.py b/bookwyrm/migrations/0101_auto_20210929_1847.py
index 3fca28eac..bdda8484f 100644
--- a/bookwyrm/migrations/0101_auto_20210929_1847.py
+++ b/bookwyrm/migrations/0101_auto_20210929_1847.py
@@ -17,7 +17,7 @@ def infer_format(app_registry, schema_editor):
     for edition in editions:
         free_format = edition.physical_format_detail.lower()
         edition.physical_format = infer_physical_format(free_format)
-        edition.save()
+        edition.save(broadcast=False, update_fields=["physical_format"])
 
 
 def reverse(app_registry, schema_editor):