diff -Nur linux-2.6.21/arch/ppc/boot/images/Makefile linux-2.6.21-owrt/arch/ppc/boot/images/Makefile
--- linux-2.6.21/arch/ppc/boot/images/Makefile	2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21-owrt/arch/ppc/boot/images/Makefile	2007-05-28 17:44:11.000000000 +0200
@@ -20,11 +20,11 @@
 
 quiet_cmd_uimage = UIMAGE  $@
       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \
-               -C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
+               -C none -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
                -d $< $@
 
 targets += uImage
-$(obj)/uImage: $(obj)/vmlinux.gz
+$(obj)/uImage: $(obj)/vmlinux.bin
 	$(Q)rm -f $@
 	$(call cmd,uimage)
 	@echo -n '  Image: $@ '