diff --git a/flux2/apps/monitoring/loki-values-configmap.yaml b/flux2/apps/monitoring/loki-values-configmap.yaml
index 199e4e07731b20b68fc410e9ef7a25ad40a61de5..293aea9323cd4dcabdf38cfd1032576133d397bd 100644
--- a/flux2/apps/monitoring/loki-values-configmap.yaml
+++ b/flux2/apps/monitoring/loki-values-configmap.yaml
@@ -39,6 +39,8 @@ data:
             index:
               prefix: index_
               period: 24h
+            chunks:
+              period: 24h
       storage_config:
         boltdb_shipper:
           active_index_directory: /data/loki/boltdb-shipper-active
@@ -58,4 +60,3 @@ data:
       table_manager:
         retention_deletes_enabled: true
         retention_period: 168h  # 7 days
-