diff --git a/k8s/charts/seaweedfs/values.yaml b/k8s/charts/seaweedfs/values.yaml
index 9381f9046..c51b2eb3e 100644
--- a/k8s/charts/seaweedfs/values.yaml
+++ b/k8s/charts/seaweedfs/values.yaml
@@ -293,9 +293,9 @@ volume:
 
   # same applies to "logs"
 
-  idx: ""
+  idx: {}
 
-  logs: ""
+  logs: {}
 
   # limit background compaction or copying speed in mega bytes per second
   compactionMBps: "50"