diff --git a/lib/hci-socket/bindings.js b/lib/hci-socket/bindings.js
index 40359623c..137a184a0 100644
--- a/lib/hci-socket/bindings.js
+++ b/lib/hci-socket/bindings.js
@@ -277,7 +277,7 @@ NobleBindings.prototype.onDisconnComplete = function (handle, reason) {
     delete this._handles[uuid];
     delete this._handles[handle];
 
-    this.emit('disconnect', uuid); // TODO: handle reason?
+    this.emit('disconnect', uuid, reason);
   } else {
     console.warn(`noble warning: unknown handle ${handle} disconnected!`);
   }
diff --git a/lib/noble.js b/lib/noble.js
index 436408dcc..5ea8171e9 100644
--- a/lib/noble.js
+++ b/lib/noble.js
@@ -237,12 +237,12 @@ Noble.prototype.disconnect = function (peripheralUuid) {
   this._bindings.disconnect(peripheralUuid);
 };
 
-Noble.prototype.onDisconnect = function (peripheralUuid) {
+Noble.prototype.onDisconnect = function (peripheralUuid, reason) {
   const peripheral = this._peripherals[peripheralUuid];
 
   if (peripheral) {
     peripheral.state = 'disconnected';
-    peripheral.emit('disconnect');
+    peripheral.emit('disconnect', reason);
   } else {
     this.emit('warning', `unknown peripheral ${peripheralUuid} disconnected!`);
   }