diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
index e4d5366a2bc..ba57e41480b 100644
--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -1316,9 +1316,9 @@ nsDOMWindowUtils::SendSimpleGestureEvent(const nsAString& aType,
     msg = NS_SIMPLE_GESTURE_ROTATE_START;
   else if (aType.EqualsLiteral("MozRotateGestureUpdate"))
     msg = NS_SIMPLE_GESTURE_ROTATE_UPDATE;
-  else if (aType.EqualsLiteral("MozRotateGesture"))
-    msg = NS_SIMPLE_GESTURE_ROTATE;
-  else if (aType.EqualsLiteral("MozTapGesture")) {
+  else if (aType.EqualsLiteral("MozRotateGesture")) {
+    msg = eRotateGesture;
+  } else if (aType.EqualsLiteral("MozTapGesture")) {
     msg = eTapGesture;
   } else if (aType.EqualsLiteral("MozPressTapGesture")) {
     msg = ePressTapGesture;
diff --git a/dom/events/EventNameList.h b/dom/events/EventNameList.h
index 7a7ea3fd58c..d9fd96bca24 100644
--- a/dom/events/EventNameList.h
+++ b/dom/events/EventNameList.h
@@ -888,7 +888,7 @@ NON_IDL_EVENT(MozRotateGestureUpdate,
               EventNameType_None,
               eSimpleGestureEventClass)
 NON_IDL_EVENT(MozRotateGesture,
-              NS_SIMPLE_GESTURE_ROTATE,
+              eRotateGesture,
               EventNameType_None,
               eSimpleGestureEventClass)
 NON_IDL_EVENT(MozTapGesture,
diff --git a/widget/EventMessageList.h b/widget/EventMessageList.h
index d4f49750be9..ec3b7a05bda 100644
--- a/widget/EventMessageList.h
+++ b/widget/EventMessageList.h
@@ -282,7 +282,7 @@ NS_EVENT_MESSAGE(NS_SIMPLE_GESTURE_MAGNIFY_UPDATE, NS_SIMPLE_GESTURE_EVENT_START
 NS_EVENT_MESSAGE(NS_SIMPLE_GESTURE_MAGNIFY,        NS_SIMPLE_GESTURE_EVENT_START + 7)
 NS_EVENT_MESSAGE(NS_SIMPLE_GESTURE_ROTATE_START,   NS_SIMPLE_GESTURE_EVENT_START + 8)
 NS_EVENT_MESSAGE(NS_SIMPLE_GESTURE_ROTATE_UPDATE,  NS_SIMPLE_GESTURE_EVENT_START + 9)
-NS_EVENT_MESSAGE(NS_SIMPLE_GESTURE_ROTATE,         NS_SIMPLE_GESTURE_EVENT_START + 10)
+NS_EVENT_MESSAGE(eRotateGesture,        NS_SIMPLE_GESTURE_EVENT_START + 10)
 NS_EVENT_MESSAGE(eTapGesture,           NS_SIMPLE_GESTURE_EVENT_START + 11)
 NS_EVENT_MESSAGE(ePressTapGesture,      NS_SIMPLE_GESTURE_EVENT_START + 12)
 NS_EVENT_MESSAGE(eEdgeUIStarted,        NS_SIMPLE_GESTURE_EVENT_START + 13)
diff --git a/widget/cocoa/nsChildView.mm b/widget/cocoa/nsChildView.mm
index 07348cd481b..8c3b14fc05e 100644
--- a/widget/cocoa/nsChildView.mm
+++ b/widget/cocoa/nsChildView.mm
@@ -4352,8 +4352,7 @@ NSEvent* gLastDragMouseDownEvent = nil;
   case eGestureState_RotateGesture:
     {
       // Setup the "rotate" event.
-      WidgetSimpleGestureEvent geckoEvent(true, NS_SIMPLE_GESTURE_ROTATE,
-                                          mGeckoChild);
+      WidgetSimpleGestureEvent geckoEvent(true, eRotateGesture, mGeckoChild);
       [self convertCocoaMouseEvent:anEvent toGeckoEvent:&geckoEvent];
       geckoEvent.delta = -mCumulativeRotation;
       if (mCumulativeRotation > 0.0) {
diff --git a/widget/windows/nsWinGesture.cpp b/widget/windows/nsWinGesture.cpp
index 568e7a12cb5..57f1254cc54 100644
--- a/widget/windows/nsWinGesture.cpp
+++ b/widget/windows/nsWinGesture.cpp
@@ -386,9 +386,9 @@ nsWinGesture::ProcessGestureMessage(HWND hWnd, WPARAM wParam, LPARAM lParam,
 
       if (gi.dwFlags & GF_BEGIN)
         evt.mMessage = NS_SIMPLE_GESTURE_ROTATE_START;
-      else if (gi.dwFlags & GF_END)
-        evt.mMessage = NS_SIMPLE_GESTURE_ROTATE;
-      else
+      else if (gi.dwFlags & GF_END) {
+        evt.mMessage = eRotateGesture;
+      } else
         evt.mMessage = NS_SIMPLE_GESTURE_ROTATE_UPDATE;
     }
     break;