diff --git a/services/swh-indexer-journal-client/journal_client.yml b/conf/indexer_journal_client.yml
rename from services/swh-indexer-journal-client/journal_client.yml
rename to conf/indexer_journal_client.yml
--- a/services/swh-indexer-journal-client/journal_client.yml
+++ b/conf/indexer_journal_client.yml
@@ -1,7 +1,6 @@
 brokers:
   - kafka
-# small number of batch
-max_messages: 1
+max_messages: 50
 consumer_id: swh.indexer.journal_client
 
 scheduler:
diff --git a/conf/journal_client.yml b/conf/journal_client.yml
--- a/conf/journal_client.yml
+++ b/conf/journal_client.yml
@@ -1,7 +1,6 @@
 brokers:
   - kafka
-# small number of batch
-max_messages: 1
+max_messages: 50
 scheduler:
   cls: remote
   args:
diff --git a/conf/journal_publisher.yml b/conf/journal_publisher.yml
--- a/conf/journal_publisher.yml
+++ b/conf/journal_publisher.yml
@@ -19,4 +19,4 @@
   args:
     url: http://swh-storage:5002/
 
-max_messages: 1
+max_messages: 50
diff --git a/docker-compose.yml b/docker-compose.yml
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -395,4 +395,4 @@
       - swh-journal-publisher
       - swh-scheduler-api
     volumes:
-      - "./conf/journal_client.yml:/etc/softwareheritage/indexer/journal_client.yml:ro"
+      - "./conf/indexer_journal_client.yml:/etc/softwareheritage/indexer/journal_client.yml:ro"