diff --git a/install/preflight/mirrorlist.sh b/install/preflight/mirrorlist.sh
index cb2cd4c9..173bd442 100644
--- a/install/preflight/mirrorlist.sh
+++ b/install/preflight/mirrorlist.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # Set mirror to single geo setup
 echo 'Server = https://geo.mirror.pkgbuild.com/$repo/os/$arch' |
   sudo tee /etc/pacman.d/mirrorlist >/dev/null