diff --git a/mozilla/xpfe/appshell/public/nsISessionHistory.h b/mozilla/xpfe/appshell/public/nsISessionHistory.h
index 04eb8051c44..5665926f3b1 100644
--- a/mozilla/xpfe/appshell/public/nsISessionHistory.h
+++ b/mozilla/xpfe/appshell/public/nsISessionHistory.h
@@ -22,6 +22,7 @@
 
 #include "nsISupports.h"
 #include "nsIFactory.h"
+#include "nsILoadAttribs.h"
 
 //Forward declarations
 class nsHistoryEntry;