diff --git a/roles/loki/templates/config.yaml b/roles/loki/templates/config.yaml
index b2d2a92..c078fc2 100644
--- a/roles/loki/templates/config.yaml
+++ b/roles/loki/templates/config.yaml
@@ -37,7 +37,7 @@ compactor:
   retention_delete_worker_count: 150
 
 limits_config:
-  {{ loki.retention | to_nice_yaml(indent=2) }}
+{{ loki.retention | to_nice_yaml | indent(2) }}
 
 chunk_store_config:
   max_look_back_period: {{ loki.retention.retention_period }}