diff --git a/dom/bluetooth2/BluetoothDevice.cpp b/dom/bluetooth2/BluetoothDevice.cpp
index 3cfd3e4b7b62..c90609b55898 100644
--- a/dom/bluetooth2/BluetoothDevice.cpp
+++ b/dom/bluetooth2/BluetoothDevice.cpp
@@ -74,6 +74,7 @@ private:
 BluetoothDevice::BluetoothDevice(nsPIDOMWindow* aWindow,
                                  const BluetoothValue& aValue)
   : DOMEventTargetHelper(aWindow)
+  , mPaired(false)
 {
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(IsDOMBinding());