diff --git a/charts/stable/postgresql/values.yaml b/charts/stable/postgresql/values.yaml
index f121101cfe9..f1e0daaa5c3 100644
--- a/charts/stable/postgresql/values.yaml
+++ b/charts/stable/postgresql/values.yaml
@@ -56,6 +56,7 @@ persistence:
     type: pvc
     accessMode: ReadWriteOnce
     size: "999Gi"
+    storageClass: "-"
 
 postgresqlPassword: "testpass"
 postgresqlUsername: "test"