diff --git a/setup_native/source/win32/customactions/languagepacks/makefile.mk b/setup_native/source/win32/customactions/languagepacks/makefile.mk
index f03b6c7851f4..64bc844b5405 100644
--- a/setup_native/source/win32/customactions/languagepacks/makefile.mk
+++ b/setup_native/source/win32/customactions/languagepacks/makefile.mk
@@ -4,9 +4,9 @@
 #
 #   $RCSfile: makefile.mk,v $
 #
-#   $Revision: 1.7 $
+#   $Revision: 1.8 $
 #
-#   last change: $Author: gm $ $Date: 2007-05-10 11:02:30 $
+#   last change: $Author: ihi $ $Date: 2007-06-05 10:48:27 $
 #
 #   The Contents of this file are made available subject to
 #   the terms of GNU Lesser General Public License Version 2.1.
@@ -49,6 +49,9 @@ USE_DEFFILE=TRUE
 
 CFLAGS+=-D_STLP_USE_STATIC_LIB
 
+#Disable precompiled header
+CDEFS+=-Dnot_used_define_to_disable_pch
+
 # --- Files --------------------------------------------------------
 
 .IF "$(GUI)"=="WNT"