diff --git a/kubernetes/common/mongo/values.yaml b/kubernetes/common/mongo/values.yaml
index d6938c1..8a68129 100644
--- a/kubernetes/common/mongo/values.yaml
+++ b/kubernetes/common/mongo/values.yaml
@@ -71,7 +71,7 @@
   ## If undefined (the default) or set to null, no storageClassName spec is
   ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
   ##   GKE, AWS & OpenStack)
-  accessMode: ReadWriteMany
+  accessMode: ReadWriteOnce
   size: 1Gi
   mountPath: /dockerdata-nfs
   mountSubPath: "mongo/data"