diff --git a/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/post.sh b/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/post.sh
index 7380ad82..4b6d8934 100755
--- a/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/post.sh
+++ b/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/post.sh
@@ -64,11 +64,13 @@ echo "Match LocalPort 22" >> /etc/ssh/sshd_config
 echo "    ChrootDirectory /target" >> /etc/ssh/sshd_config
 kill -HUP $(cat /run/sshd.pid)
 if [ -e /sys/firmware/efi ]; then
-    bootnum=$(efibootmgr | grep ubuntu | sed -e 's/ .*//' -e 's/\*//' -e s/Boot//)
-    currboot=$(efibootmgr | grep ^BootOrder: | awk '{print $2}')
-    nextboot=$(echo $currboot| awk -F, '{print $1}')
-    [ "$nextboot" = "$bootnum" ] || chroot /target efibootmgr -o $bootnum,$currboot
-    chroot /target efibootmgr -D
+    bootnum=$(chroot /target efibootmgr | grep ubuntu | sed -e 's/ .*//' -e 's/\*//' -e s/Boot//)
+    if [ ! -z "$bootnum" ]; then
+        currboot=$(chroot /target efibootmgr | grep ^BootOrder: | awk '{print $2}')
+        nextboot=$(echo $currboot| awk -F, '{print $1}')
+        [ "$nextboot" = "$bootnum" ] || chroot /target efibootmgr -o $bootnum,$currboot
+        chroot /target efibootmgr -D
+    fi
 fi
 cat /target/etc/confluent/tls/*.pem > /target/etc/confluent/ca.pem
 cat /target/etc/confluent/tls/*.pem > /etc/confluent/ca.pem