diff --git a/setup.sh b/setup.sh
index 2232306..89b1ab4 100644
--- a/setup.sh
+++ b/setup.sh
@@ -92,10 +92,11 @@ function we_have_exactly_one_part () {
 }
 
 function get_drive_id () {
-    local drive_id_list
-    drive_id_list="$(find -L /dev/disk/by-id -samefile "${1:?}")"
-    if [[ "$(wc -l <<<"${drive_id_list}")" -eq '1' ]] && [[ "$(wc -c <<<"${drive_id_list}")" -gt '1' ]]; then
-        printf -- '%s' "${drive_id_list}"
+    local drive_id_list drive_id_single
+    drive_id_list="$(find -L /dev/disk/by-id -samefile "${1:?}" | sort)"
+    drive_id_single="$(head -n1 <<<"${drive_id_list}")"
+    if [[ "$(wc -l <<<"${drive_id_single}")" -eq '1' ]] && [[ "$(wc -c <<<"${drive_id_single}")" -gt '1' ]]; then
+        printf -- '%s' "${drive_id_single}"
         return 0
     fi
     >2 printf -- '%s\n' 'Not exactly one '"'${1:?}'"' partition entry in /dev/disk/by-id, exiting 1 ...'