diff --git a/lib/collections/schemas/cart.js b/lib/collections/schemas/cart.js
index a78431dcdd8..798155c2566 100644
--- a/lib/collections/schemas/cart.js
+++ b/lib/collections/schemas/cart.js
@@ -179,8 +179,7 @@ export const Cart = new SimpleSchema({
   },
   billing: {
     type: [Payment],
-    optional: true,
-    blackbox: true
+    optional: true
   },
   tax: {
     type: Number,
diff --git a/lib/collections/schemas/payments.js b/lib/collections/schemas/payments.js
index d7271fdc0ec..e7853945ae0 100644
--- a/lib/collections/schemas/payments.js
+++ b/lib/collections/schemas/payments.js
@@ -122,8 +122,7 @@ export const PaymentMethod = new SimpleSchema({
           $setOnInsert: new Date
         };
       }
-    },
-    denyUpdate: true
+    }
   },
   updatedAt: {
     type: Date,
@@ -247,7 +246,8 @@ export const Payment = new SimpleSchema({
   },
   paymentMethod: {
     type: PaymentMethod,
-    optional: true
+    optional: true,
+    blackbox: true
   },
   invoice: {
     type: Invoice,
diff --git a/server/api/core/core.js b/server/api/core/core.js
index c70a58bf9b4..b9724ca2525 100644
--- a/server/api/core/core.js
+++ b/server/api/core/core.js
@@ -22,7 +22,6 @@ const { Jobs, Packages, Shops } = Collections;
 export default {
 
   init() {
-
     // run beforeCoreInit hooks
     Hooks.Events.run("beforeCoreInit");