diff --git a/mozilla/xpfe/bootstrap/nsAppRunner.cpp b/mozilla/xpfe/bootstrap/nsAppRunner.cpp
index 6d4fd9c6205..8dd61df1e2d 100644
--- a/mozilla/xpfe/bootstrap/nsAppRunner.cpp
+++ b/mozilla/xpfe/bootstrap/nsAppRunner.cpp
@@ -80,6 +80,7 @@
 #include "nsWindowCreator.h"
 #include "nsIWindowWatcher.h"
 #include "nsProcess.h"
+#include "nsILocalFile.h"
 
 #ifdef MOZ_XPINSTALL
 #include "InstallCleanupDefines.h"