diff --git a/faust/assignor/leader_assignor.py b/faust/assignor/leader_assignor.py
index 2b891921e..535667250 100644
--- a/faust/assignor/leader_assignor.py
+++ b/faust/assignor/leader_assignor.py
@@ -34,6 +34,7 @@ def _leader_topic(self) -> TopicT:
             partitions=1,
             acks=False,
             internal=True,
+            replicas=self.app.conf.topic_replication_factor,
         )
 
     @cached_property