diff --git a/pbs-api-types/src/datastore.rs b/pbs-api-types/src/datastore.rs
index dde385c3..d75ead90 100644
--- a/pbs-api-types/src/datastore.rs
+++ b/pbs-api-types/src/datastore.rs
@@ -158,13 +158,14 @@ pub const PRUNE_SCHEMA_KEEP_YEARLY: Schema =
         .schema();
 
 #[api]
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Default, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "lowercase")]
 /// The order to sort chunks by
 pub enum ChunkOrder {
     /// Iterate chunks in the index order
     None,
     /// Iterate chunks in inode order
+    #[default]
     Inode,
 }
 
diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index 8286b846..9a573dd7 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -72,7 +72,7 @@ impl DataStoreImpl {
             gc_mutex: Mutex::new(()),
             last_gc_status: Mutex::new(GarbageCollectionStatus::default()),
             verify_new: false,
-            chunk_order: ChunkOrder::None,
+            chunk_order: Default::default(),
             last_digest: None,
             sync_level: Default::default(),
         })
@@ -268,14 +268,13 @@ impl DataStore {
             DatastoreTuning::API_SCHEMA
                 .parse_property_string(config.tuning.as_deref().unwrap_or(""))?,
         )?;
-        let chunk_order = tuning.chunk_order.unwrap_or(ChunkOrder::Inode);
 
         Ok(DataStoreImpl {
             chunk_store,
             gc_mutex: Mutex::new(()),
             last_gc_status: Mutex::new(gc_status),
             verify_new: config.verify_new.unwrap_or(false),
-            chunk_order,
+            chunk_order: tuning.chunk_order.unwrap_or_default(),
             last_digest,
             sync_level: tuning.sync_level.unwrap_or_default(),
         })