diff --git a/provision-contest/disable-turboboost_ht b/provision-contest/disable-turboboost_ht
index 272d0ee2..c1f92eae 100755
--- a/provision-contest/disable-turboboost_ht
+++ b/provision-contest/disable-turboboost_ht
@@ -5,7 +5,8 @@ shopt -s extglob
 
 declare -A core_ids
 
-for cpu in /sys/devices/system/cpu/cpu* ; do
+# shellcheck disable=SC2012
+for cpu in $(ls -1d /sys/devices/system/cpu/cpu* | sort --version-sort) ; do
 	[[ $(basename $cpu) =~ ^cpu[0-9]+$ ]] || continue
 
 	# Reenable stuff in case we are rerunning this script.