diff --git a/mozilla/accessible/src/base/nsRootAccessible.cpp b/mozilla/accessible/src/base/nsRootAccessible.cpp
index 6eec9b31b47..0dec640b243 100644
--- a/mozilla/accessible/src/base/nsRootAccessible.cpp
+++ b/mozilla/accessible/src/base/nsRootAccessible.cpp
@@ -481,7 +481,7 @@ NS_IMETHODIMP nsRootAccessible::HandleEvent(nsIDOMEvent* aEvent)
     return NS_OK;
   }
       
-  if (eventType.LowerCaseEqualsLiteral("PageHide")) {
+  if (eventType.LowerCaseEqualsLiteral("pagehide")) {
     // Only get cached accessible for pagehide -- so that we don't create it
     // just to destroy it.
     nsCOMPtr<nsIWeakReference> weakShell(do_GetWeakReference(eventShell));