diff --git a/accessible/src/base/nsAccessibleEventData.cpp b/accessible/src/base/nsAccessibleEventData.cpp
index 9e8bb7b440d2..d14689c5d31a 100755
--- a/accessible/src/base/nsAccessibleEventData.cpp
+++ b/accessible/src/base/nsAccessibleEventData.cpp
@@ -49,6 +49,9 @@
 #include "nsIDOMXULMultSelectCntrlEl.h"
 #include "nsXULTreeAccessible.h"
 #endif
+#include "nsIContent.h"
+#include "nsIPresShell.h"
+#include "nsPresContext.h"
 
 PRBool nsAccEvent::gLastEventFromUserInput = PR_FALSE;
 nsIDOMNode* nsAccEvent::gLastEventNodeWeak = 0;