diff --git a/dom/system/gonk/AudioChannelManager.cpp b/dom/system/gonk/AudioChannelManager.cpp
index fcbb3c36f35..9be9834ff9a 100644
--- a/dom/system/gonk/AudioChannelManager.cpp
+++ b/dom/system/gonk/AudioChannelManager.cpp
@@ -41,13 +41,7 @@ AudioChannelManager::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
 void
 AudioChannelManager::Notify(const SwitchEvent& aEvent)
 {
-  if (aEvent.status() == SWITCH_STATE_ON ||
-      aEvent.status() == SWITCH_STATE_HEADSET ||
-      aEvent.status() == SWITCH_STATE_HEADPHONE) {
-    mState = SWITCH_STATE_ON;
-  } else {
-    mState = SWITCH_STATE_OFF;
-  }
+  mState = aEvent.status();
 
   DispatchTrustedEvent(NS_LITERAL_STRING("headphoneschange"));
 }
diff --git a/dom/system/gonk/AudioChannelManager.h b/dom/system/gonk/AudioChannelManager.h
index 947be8c0702..7ff57ba4611 100644
--- a/dom/system/gonk/AudioChannelManager.h
+++ b/dom/system/gonk/AudioChannelManager.h
@@ -43,7 +43,8 @@ public:
 
   bool Headphones() const
   {
-    return mState == hal::SWITCH_STATE_ON;
+    MOZ_ASSERT(mState != SWITCH_STATE_UNKNOWN);
+    return mState != hal::SWITCH_STATE_OFF;
   }
 
   IMPL_EVENT_HANDLER(headphoneschange)