diff --git a/setup.sh b/setup.sh
index 6a0fe0a..8d3a125 100644
--- a/setup.sh
+++ b/setup.sh
@@ -210,7 +210,7 @@ function export_pool () {
 }
 
 function setup_zpool () {
-    local zpool_drive drive_by_id
+    local drive_by_id
     zpool_drive="$(select_part 'zfs')"
     drive_by_id="$(get_drive_id "${zpool_drive}")"