diff --git a/ipc/ipdl/ipdl/builtin.py b/ipc/ipdl/ipdl/builtin.py
index 17ea36de47d2..24fea9660427 100644
--- a/ipc/ipdl/ipdl/builtin.py
+++ b/ipc/ipdl/ipdl/builtin.py
@@ -43,9 +43,7 @@ Types = (
 
 HeaderIncludes = (
     'mozilla/Attributes.h',
-    'base/basictypes.h',
     'prtime.h',
-    'nscore.h',
     'IPCMessageStart.h',
     'ipc/IPCMessageUtils.h',
     'nsAutoPtr.h',