diff --git a/dockerfiles/swh-journal-publisher/publisher.yml b/dockerfiles/swh-journal-publisher/publisher.yml
index dc46a5c..555e9ad 100644
--- a/dockerfiles/swh-journal-publisher/publisher.yml
+++ b/dockerfiles/swh-journal-publisher/publisher.yml
@@ -1,7 +1,9 @@
 brokers:
   - kafka
 
+temporary_prefix: swh.tmp.journal.new
+
 storage:
   cls: remote
   args:
     url: http://swh-storage:5002/
diff --git a/dockerfiles/swh-storage-listener/listener.yml b/dockerfiles/swh-storage-listener/listener.yml
index 415b056..a5f482b 100644
--- a/dockerfiles/swh-storage-listener/listener.yml
+++ b/dockerfiles/swh-storage-listener/listener.yml
@@ -1,3 +1,4 @@
 database: service=swh
-brokers':
+brokers:
   - kafka
+topic_prefix: swh.tmp.journal.new