diff --git a/board/minnowboard/post-build.sh b/board/minnowboard/post-build.sh
index 1406a509c1..45f7b527f3 100755
--- a/board/minnowboard/post-build.sh
+++ b/board/minnowboard/post-build.sh
@@ -5,6 +5,8 @@
 cp -v board/minnowboard/grub-${2}.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
 
 # Add a console on tty1
-grep -qE '^tty1::' ${TARGET_DIR}/etc/inittab || \
-sed -i '/GENERIC_SERIAL/a\
+if [ -e ${TARGET_DIR}/etc/inittab ]; then
+    grep -qE '^tty1::' ${TARGET_DIR}/etc/inittab || \
+	sed -i '/GENERIC_SERIAL/a\
 tty1::respawn:/sbin/getty -L  tty1 0 vt100 # HDMI console' ${TARGET_DIR}/etc/inittab
+fi