diff --git a/cross/pkgs/newlib.sh b/cross/pkgs/newlib.sh
index 7b17e79..bff3763 100755
--- a/cross/pkgs/newlib.sh
+++ b/cross/pkgs/newlib.sh
@@ -62,7 +62,7 @@ export CFLAGS_FOR_TARGET="-g -gdwarf-2 -ggdb -O$NEWLIB_OPTIMIZATION"
 	mkdir $NEWLIB_BUILD &&
 	mkdir $NEWLIB_PREFIX &&
 	cd $NEWLIB_BUILD &&
-	$NEWLIB_SRC/configure --prefix=$NEWLIB_PREFIX --target=x86_64-jehanne &&
+	$NEWLIB_SRC/configure --enable-newlib-mb --prefix=$NEWLIB_PREFIX --target=x86_64-jehanne &&
 	make all && make install &&
 	rm -fr $JEHANNE/sys/posix/newlib &&
 	rm -fr $JEHANNE/arch/amd64/lib/newlib &&