diff --git a/ghost/admin/app/controllers/settings/membership.js b/ghost/admin/app/controllers/settings/membership.js
index f83c39b45b..b0d15b0c95 100644
--- a/ghost/admin/app/controllers/settings/membership.js
+++ b/ghost/admin/app/controllers/settings/membership.js
@@ -102,6 +102,22 @@ export default class MembersAccessController extends Controller {
         this.leaveSettingsTransition = null;
     }
 
+    @action
+    async membersSubscriptionAccessChanged() {
+        const [oldValue] = this.settings.changedAttributes().membersSignupAccess;
+
+        if (oldValue === 'none') {
+            // when saved value is 'none' the server won't inject the portal script
+            // to work around that and show the expected portal preview we save and
+            // force a refresh
+            await this.saveSettingsTask.perform();
+            this.updatePortalPreview();
+            this.portalPreviewGuid = Date.now().valueOf();
+        } else {
+            this.updatePortalPreview();
+        }
+    }
+
     @action
     setStripePlansCurrency(event) {
         const newCurrency = event.value;
diff --git a/ghost/admin/app/templates/settings/membership.hbs b/ghost/admin/app/templates/settings/membership.hbs
index c3f2f17e93..3045f633a3 100644
--- a/ghost/admin/app/templates/settings/membership.hbs
+++ b/ghost/admin/app/templates/settings/membership.hbs
@@ -41,7 +41,7 @@
                     </section>
 
                     <div class="gh-setting-members-access">
-                        <Settings::MembersSubscriptionAccess @onChange={{this.updatePortalPreview}} />
+                        <Settings::MembersSubscriptionAccess @onChange={{this.membersSubscriptionAccessChanged}} />
                         <Settings::MembersDefaultPostAccess />
                     </div>
                 </div>