diff --git a/xpcom/typelib/xpt/xpt_arena.h b/xpcom/typelib/xpt/xpt_arena.h
index e845c87c089a..6ac146ffe71b 100644
--- a/xpcom/typelib/xpt/xpt_arena.h
+++ b/xpcom/typelib/xpt/xpt_arena.h
@@ -10,7 +10,6 @@
 #ifndef __xpt_arena_h__
 #define __xpt_arena_h__
 
-#include "prcpucfg.h"
 #include <stdlib.h>
 #include "mozilla/Attributes.h"
 #include "mozilla/MemoryReporting.h"
diff --git a/xpcom/typelib/xpt/xpt_xdr.cpp b/xpcom/typelib/xpt/xpt_xdr.cpp
index e96ba6c09fbd..04b90422aa49 100644
--- a/xpcom/typelib/xpt/xpt_xdr.cpp
+++ b/xpcom/typelib/xpt/xpt_xdr.cpp
@@ -6,7 +6,6 @@
 /* Implementation of XDR primitives. */
 
 #include "xpt_xdr.h"
-#include "nspr.h"
 #include "nscore.h"
 #include <string.h>             /* strchr */
 #include "mozilla/EndianUtils.h"