diff --git a/u-boot/common/cmd_setmac.c b/u-boot/common/cmd_setmac.c
index af72b7ecdf..f8ac013639 100644
--- a/u-boot/common/cmd_setmac.c
+++ b/u-boot/common/cmd_setmac.c
@@ -250,7 +250,7 @@ int do_setserial(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
   if (argc != 2)
     return CMD_RET_FAILURE;
 
-  serial_number = skip_atoi(argv[1]);
+  serial_number = simple_strtoul(argv[1], NULL, 16);
   if (serial_number <= 0) {
     printf("Invalid serialnumber. <= 0!\n");
     return CMD_RET_FAILURE;