--- a/Makefile
+++ b/Makefile
@@ -1051,7 +1051,7 @@ quiet_cmd_pad_cat = CAT     $@
 cmd_pad_cat = $(cmd_objcopy) && $(append) || { rm -f $@; false; }
 
 quiet_cmd_lzma = LZMA    $@
-cmd_lzma = lzma -c -z -k -9 $< > $@
+cmd_lzma = xz --format=lzma -c -z -k -9 $< > $@
 
 cfg: u-boot.cfg
 
