diff --git a/bookwyrm/models/status.py b/bookwyrm/models/status.py
index 3784680f..0dee0b75 100644
--- a/bookwyrm/models/status.py
+++ b/bookwyrm/models/status.py
@@ -354,9 +354,11 @@ class Boost(ActivityMixin, Status):
         # This constraint can't work as it would cross tables.
         # class Meta:
         #     unique_together = ('user', 'boosted_status')
-        if Boost.objects.filter(
-            boosted_status=self.boosted_status, user=self.user
-        ).exclude(id=self.id).exists():
+        if (
+            Boost.objects.filter(boosted_status=self.boosted_status, user=self.user)
+            .exclude(id=self.id)
+            .exists()
+        ):
             return
 
         super().save(*args, **kwargs)