diff --git a/apps-kustomized/mastodon/configmap-fix-helm-chart-bug.yaml b/apps-kustomized/mastodon/configmap-fix-helm-chart-bug.yaml
new file mode 100644
index 0000000..86a6d00
--- /dev/null
+++ b/apps-kustomized/mastodon/configmap-fix-helm-chart-bug.yaml
@@ -0,0 +1,3 @@
+- op: add
+  path: /data/S3_PERMISSION
+  value: private
diff --git a/apps-kustomized/mastodon/kustomization.yaml b/apps-kustomized/mastodon/kustomization.yaml
index e5f82e3..363e20a 100644
--- a/apps-kustomized/mastodon/kustomization.yaml
+++ b/apps-kustomized/mastodon/kustomization.yaml
@@ -13,6 +13,10 @@ helmChartInflationGenerator:
   values: values.yaml
 
 patches:
+- path: configmap-fix-helm-chart-bug.yaml
+  target:
+    kind: ConfigMap
+    name: masto-mastodon-env
 - path: secret-remove-helm-ones.yaml
   target:
     kind: Secret