diff --git a/mk_mmc.sh b/mk_mmc.sh
index 09dddeb..dc2cc88 100755
--- a/mk_mmc.sh
+++ b/mk_mmc.sh
@@ -1485,6 +1485,7 @@ case "$UBOOT_TYPE" in
  is_omap
 
  BETA_KERNEL=1
+ SERIAL_MODE=1
         ;;
     panda)