diff --git a/patroni/postgresql/sync.py b/patroni/postgresql/sync.py
index 169f5f00..0a2aceab 100644
--- a/patroni/postgresql/sync.py
+++ b/patroni/postgresql/sync.py
@@ -381,7 +381,7 @@ END;$$""")
 
     def set_synchronous_standby_names(self, sync: Collection[str], num: Optional[int] = None) -> None:
         """Constructs and sets ``synchronous_standby_names`` GUC value.
-        
+
         .. note::
             standbys in ``synchronous_standby_names`` will be sorted by name.