diff --git a/dom/bluetooth/BluetoothAdapter.cpp b/dom/bluetooth/BluetoothAdapter.cpp
index 545055c2f6dd..5f33a587490f 100644
--- a/dom/bluetooth/BluetoothAdapter.cpp
+++ b/dom/bluetooth/BluetoothAdapter.cpp
@@ -14,11 +14,13 @@
 #include "BluetoothReplyRunnable.h"
 #include "BluetoothUtils.h"
 
+#include "GeneratedEvents.h"
 #include "nsDOMClassInfo.h"
 #include "nsDOMEvent.h"
 #include "nsThreadUtils.h"
 #include "nsXPCOMCIDInternal.h"
 #include "nsIDOMDOMRequest.h"
+#include "nsIDOMBluetoothDeviceAddressEvent.h"
 #include "nsContentUtils.h"
 
 #include "mozilla/LazyIdleThread.h"
@@ -272,6 +274,19 @@ BluetoothAdapter::Notify(const BluetoothSignal& aData)
     nsRefPtr<BluetoothDevice> d = BluetoothDevice::Create(GetOwner(), mPath, aData.value());
     nsRefPtr<BluetoothDeviceEvent> e = BluetoothDeviceEvent::Create(d);
     e->Dispatch(ToIDOMEventTarget(), NS_LITERAL_STRING("devicefound"));
+  } else if (aData.name().EqualsLiteral("DeviceDisappeared")) {
+    const nsAString& deviceAddress = aData.value().get_nsString();
+
+    nsCOMPtr<nsIDOMEvent> event;
+    NS_NewDOMBluetoothDeviceAddressEvent(getter_AddRefs(event), nullptr, nullptr);
+
+    nsCOMPtr<nsIDOMBluetoothDeviceAddressEvent> e = do_QueryInterface(event);
+    e->InitBluetoothDeviceAddressEvent(NS_LITERAL_STRING("devicedisappeared"),
+                                       false, false, deviceAddress);
+    e->SetTrusted(true);
+
+    bool dummy;
+    DispatchEvent(event, &dummy);
   } else if (aData.name().EqualsLiteral("PropertyChanged")) {
     // Get BluetoothNamedValue, make sure array length is 1
     InfallibleTArray<BluetoothNamedValue> arr = aData.value().get_ArrayOfBluetoothNamedValue();
diff --git a/dom/bluetooth/Makefile.in b/dom/bluetooth/Makefile.in
index 097a79cf8c25..e5659abd7980 100644
--- a/dom/bluetooth/Makefile.in
+++ b/dom/bluetooth/Makefile.in
@@ -45,6 +45,7 @@ XPIDLSRCS = \
   nsIDOMBluetoothAdapter.idl \
   nsIDOMBluetoothDevice.idl \
   nsIDOMBluetoothDeviceEvent.idl \
+  nsIDOMBluetoothDeviceAddressEvent.idl \
   nsIDOMBluetoothPropertyEvent.idl \
   $(NULL)
 
diff --git a/dom/bluetooth/nsIDOMBluetoothDeviceAddressEvent.idl b/dom/bluetooth/nsIDOMBluetoothDeviceAddressEvent.idl
new file mode 100644
index 000000000000..f89783e4f3ed
--- /dev/null
+++ b/dom/bluetooth/nsIDOMBluetoothDeviceAddressEvent.idl
@@ -0,0 +1,21 @@
+/* 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/. */
+
+#include "nsIDOMEvent.idl"
+
+[scriptable, builtinclass, uuid(afcb832f-bbb5-45fa-b703-f8185bd2d26d)]
+interface nsIDOMBluetoothDeviceAddressEvent : nsIDOMEvent
+{
+  readonly attribute DOMString  deviceAddress;
+
+  [noscript] void initBluetoothDeviceAddressEvent(in DOMString aType,
+                                                  in boolean aCanBubble,
+                                                  in boolean aCancelable,
+                                                  in DOMString aDeviceAddress);
+};
+
+dictionary BluetoothDeviceAddressEventInit : EventInit
+{
+  DOMString  deviceAddress;
+};
diff --git a/js/xpconnect/src/event_impl_gen.conf.in b/js/xpconnect/src/event_impl_gen.conf.in
index 72ea8454445d..54d706483145 100644
--- a/js/xpconnect/src/event_impl_gen.conf.in
+++ b/js/xpconnect/src/event_impl_gen.conf.in
@@ -21,7 +21,8 @@ simple_events = [
     'DeviceOrientationEvent',
     'DeviceLightEvent',
     'MozApplicationEvent',
-    'DeviceStorageChangeEvent'
+    'DeviceStorageChangeEvent',
+    'BluetoothDeviceAddressEvent'
   ]
 
 """ include file names """