diff --git a/mozilla/modules/plugin/src/nsplugin.cpp b/mozilla/modules/plugin/src/nsplugin.cpp
index cca57fcb32f..cbcb4e0d0bb 100644
--- a/mozilla/modules/plugin/src/nsplugin.cpp
+++ b/mozilla/modules/plugin/src/nsplugin.cpp
@@ -44,6 +44,10 @@
 #endif
 
 #include "prthread.h"
+/* This is a private NSPR header - cls */
+#ifdef OJI
+#include "private/pprthred.h"
+#endif
 #include "prtypes.h"
 #include "nsHashtable.h"
 #include "nsMalloc.h"