diff --git a/confluent_osdeploy/el8/profiles/default/scripts/pre.sh b/confluent_osdeploy/el8/profiles/default/scripts/pre.sh
index ddad7293..50dcd35f 100644
--- a/confluent_osdeploy/el8/profiles/default/scripts/pre.sh
+++ b/confluent_osdeploy/el8/profiles/default/scripts/pre.sh
@@ -25,7 +25,7 @@ if [ -f "/run/install/cmdline.d/01-autocons.conf" ]; then
     consoledev=$(cat /run/install/cmdline.d/01-autocons.conf | sed -e 's!console=!/dev/!' -e 's/,.*//')
     tmux a <> $consoledev >&0 2>&1 &
 fi
-curl -f ${proto}://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /tmp/getinstalldisk
+curl -f https://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /tmp/getinstalldisk
 /usr/libexec/platform-python /tmp/getinstalldisk
 if [ -e /tmp/installdisk ]; then
     echo clearpart --all --initlabel >> /tmp/partitioning
diff --git a/confluent_osdeploy/suse15/profiles/hpc/scripts/pre.sh b/confluent_osdeploy/suse15/profiles/hpc/scripts/pre.sh
index 660c5097..296ae304 100644
--- a/confluent_osdeploy/suse15/profiles/hpc/scripts/pre.sh
+++ b/confluent_osdeploy/suse15/profiles/hpc/scripts/pre.sh
@@ -19,6 +19,6 @@ for i in  /etc/ssh/ssh_host*key.pub; do
     echo HostCertificate $certname >> /etc/ssh/sshd_config
 done
 /usr/sbin/sshd
-curl -f ${proto}://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /tmp/getinstalldisk
+curl -f https://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /tmp/getinstalldisk
 python3 /tmp/getinstalldisk
 sed -e s!%%INSTDISK%%!/dev/$(cat /tmp/installdisk)! -e s!%%NODENAME%%!$nodename! -e "s?%%ROOTPASSWORD%%?${rootpw}?" /tmp/profile/autoinst.xml > /tmp/profile/modified.xml
diff --git a/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/pre.sh b/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/pre.sh
index cfb68a3c..df20d728 100755
--- a/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/pre.sh
+++ b/confluent_osdeploy/ubuntu20.04/profiles/default/scripts/pre.sh
@@ -14,6 +14,6 @@ echo HostbasedUsesNameFromPacketOnly yes >> /etc/ssh/sshd_config.d/confluent.con
 echo IgnoreRhosts no >> /etc/ssh/sshd_config.d/confluent.conf
 systemctl restart sshd
 curl -f X POST -H "CONFLUENT_NODENAME: $nodename" -H "CONFLUENT_APIKEY: $apikey" https://$mgr/confluent-api/self/nodelist > /tmp/allnodes
-curl -f ${proto}://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /custom-installation/getinstalldisk
+curl -f https://$mgr/confluent-public/os/$profile/scripts/getinstalldisk > /custom-installation/getinstalldisk
 python3 /custom-installation/getinstalldisk
 sed -i s!%%INSTALLDISK%%!/dev/$(cat /tmp/installdisk)! /autoinstall.yaml