diff --git a/dom/tests/mochitest/general/test_interfaces.html b/dom/tests/mochitest/general/test_interfaces.html
index a7b636f1e49e..950510ac440a 100644
--- a/dom/tests/mochitest/general/test_interfaces.html
+++ b/dom/tests/mochitest/general/test_interfaces.html
@@ -154,15 +154,18 @@ var interfaceNamesInGlobalScope =
 // IMPORTANT: Do not change this list without review from a DOM peer!
     "BlobEvent",
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    {name: "BluetoothAdapter", b2g: true},
+    {name: "BluetoothAdapter", b2g: true, permission: "bluetooth"},
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    {name: "BluetoothDevice", b2g: true},
+    {name: "BluetoothDevice", b2g: true, permission: "bluetooth"},
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    {name: "BluetoothDeviceEvent", b2g: true},
+    {name: "BluetoothDeviceEvent", b2g: true, permission: "bluetooth"},
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    {name: "BluetoothManager", b2g: true},
+    {name: "BluetoothDiscoveryStateChangedEvent", b2g: true,
+     permission: "bluetooth"},
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    {name: "BluetoothStatusChangedEvent", b2g: true},
+    {name: "BluetoothManager", b2g: true, permission: "bluetooth"},
+// IMPORTANT: Do not change this list without review from a DOM peer!
+    {name: "BluetoothStatusChangedEvent", b2g: true, permission: "bluetooth"},
 // IMPORTANT: Do not change this list without review from a DOM peer!
     {name: "BoxObject", xbl: true},
 // IMPORTANT: Do not change this list without review from a DOM peer!
diff --git a/dom/webidl/BluetoothDiscoveryStateChangedEvent.webidl b/dom/webidl/BluetoothDiscoveryStateChangedEvent.webidl
new file mode 100644
index 000000000000..c6fcf780173b
--- /dev/null
+++ b/dom/webidl/BluetoothDiscoveryStateChangedEvent.webidl
@@ -0,0 +1,19 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+[Constructor(DOMString type,
+             optional BluetoothDiscoveryStateChangedEventInit eventInitDict),
+ Func="Navigator::HasBluetoothSupport"]
+interface BluetoothDiscoveryStateChangedEvent : Event
+{
+    readonly attribute boolean discovering;
+};
+
+dictionary BluetoothDiscoveryStateChangedEventInit : EventInit
+{
+    boolean discovering = false;
+};
+
diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build
index d15be685655b..51d5ba0d882c 100644
--- a/dom/webidl/moz.build
+++ b/dom/webidl/moz.build
@@ -656,6 +656,7 @@ if CONFIG['MOZ_GAMEPAD']:
 if CONFIG['MOZ_B2G_BT']:
     GENERATED_EVENTS_WEBIDL_FILES += [
         'BluetoothDeviceEvent.webidl',
+        'BluetoothDiscoveryStateChangedEvent.webidl',
         'BluetoothStatusChangedEvent.webidl',
     ]