diff --git a/kfet/migrations/0049_remove_checkout.py b/kfet/migrations/0049_remove_checkout.py
index 8328c9c4..d2eae10c 100644
--- a/kfet/migrations/0049_remove_checkout.py
+++ b/kfet/migrations/0049_remove_checkout.py
@@ -13,11 +13,9 @@ def adapt_operation_types(apps, schema_editor):
 
 def revert_operation_types(apps, schema_editor):
     Operation = apps.get_model("kfet", "Operation")
-
-    for ope in Operation.objects.filter(type='edit'):
-        ope.type = 'deposit' if ope.amount > 0 else 'withdraw'
-        ope.is_checkout = False
-        ope.save()
+    edits = Operation.objects.filter(type='edit')
+    edits.filter(amount__gt=0).update(type='deposit')
+    edits.filter(amount__lte=0).update(type='withdraw')
 
 
 class Migration(migrations.Migration):