diff --git a/mozilla/xpcom/typelib/xpt/src/Makefile.in b/mozilla/xpcom/typelib/xpt/src/Makefile.in
index 6cab9fee3b9..23548502235 100644
--- a/mozilla/xpcom/typelib/xpt/src/Makefile.in
+++ b/mozilla/xpcom/typelib/xpt/src/Makefile.in
@@ -26,6 +26,7 @@ MODULE		= xpcom
 LIBRARY_NAME	= xpt
 
 LIB_IS_C_ONLY	= 1
+INTERNAL_TOOLS	= 1
 
 CSRCS		= xpt_struct.c 	\
 		  xpt_xdr.c	\
diff --git a/mozilla/xpcom/typelib/xpt/tests/Makefile.in b/mozilla/xpcom/typelib/xpt/tests/Makefile.in
index 10e9a49d8b6..5534b3408d4 100644
--- a/mozilla/xpcom/typelib/xpt/tests/Makefile.in
+++ b/mozilla/xpcom/typelib/xpt/tests/Makefile.in
@@ -23,6 +23,8 @@ include $(DEPTH)/config/autoconf.mk
 
 MODULE		= xpcom
 
+INTERNAL_TOOLS	= 1
+
 SIMPLE_PROGRAMS	= PrimitiveTest SimpleTypeLib
 
 CSRCS		= PrimitiveTest.c SimpleTypeLib.c