diff --git a/defaults/main.yml b/defaults/main.yml
index 14737c2a81f15d3209133d187d093547d9726c77..78f904b0c76112a7c3a752d80953c89db1c57182 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -38,3 +38,4 @@ borgbackup_keep_yearly: 0
 borgbackup_use_msmtp: true
 borgbackup_email_from: "notifications@oh14.de"
 borgbackup_interval: "hourly"
+borgbackup_chunker_params: "19,23,21,4095"
diff --git a/templates/config.yaml.j2 b/templates/config.yaml.j2
index bd27e70befdb67511deaae77ebe1d11ba4a42ae5..6e63e129315a426289febc5e7d3944bdd188d15f 100644
--- a/templates/config.yaml.j2
+++ b/templates/config.yaml.j2
@@ -18,6 +18,7 @@ location:
 storage:
   compression: {{ borgbackup_compression }}
   encryption_passphrase: {{ borgbackup_key }}
+  chunker_params: {{ borgbackup_chunker_params }}
 
 retention:
 # Retention policy for how many backups to keep in each category.