diff --git a/dom/events/EventNameList.h b/dom/events/EventNameList.h
index 0420d8da83e8..7651fb75a740 100644
--- a/dom/events/EventNameList.h
+++ b/dom/events/EventNameList.h
@@ -817,7 +817,7 @@ NON_IDL_EVENT(MozScrolledAreaChanged,
 
 #ifdef MOZ_GAMEPAD
 NON_IDL_EVENT(gamepadbuttondown,
-              NS_GAMEPAD_BUTTONDOWN,
+              eGamepadButtonDown,
               EventNameType_None,
               eBasicEventClass)
 NON_IDL_EVENT(gamepadbuttonup,
diff --git a/widget/EventMessageList.h b/widget/EventMessageList.h
index 7190fa32609a..1be9538c23f4 100644
--- a/widget/EventMessageList.h
+++ b/widget/EventMessageList.h
@@ -415,7 +415,7 @@ NS_EVENT_MESSAGE(NS_SPEAKERMANAGER_SPEAKERFORCEDCHANGE, NS_SPEAKERMANAGER_EVENT_
 #ifdef MOZ_GAMEPAD
 // Gamepad input events
 NS_EVENT_MESSAGE(NS_GAMEPAD_START,        6000)
-NS_EVENT_MESSAGE(NS_GAMEPAD_BUTTONDOWN,   NS_GAMEPAD_START)
+NS_EVENT_MESSAGE(eGamepadButtonDown,     NS_GAMEPAD_START)
 NS_EVENT_MESSAGE(NS_GAMEPAD_BUTTONUP,     NS_GAMEPAD_START + 1)
 NS_EVENT_MESSAGE(NS_GAMEPAD_AXISMOVE,     NS_GAMEPAD_START + 2)
 NS_EVENT_MESSAGE(eGamepadConnected,      NS_GAMEPAD_START + 3)