diff --git a/stage2/02-net-tweaks/01-run.sh b/stage2/02-net-tweaks/01-run.sh
index 154e515..63fbff7 100755
--- a/stage2/02-net-tweaks/01-run.sh
+++ b/stage2/02-net-tweaks/01-run.sh
@@ -12,7 +12,8 @@ fi
 
 if [ -v WPA_ESSID ] && [ -v WPA_PASSWORD ]; then
 on_chroot <<EOF
-wpa_passphrase "${WPA_ESSID}" "${WPA_PASSWORD}" >> "/etc/wpa_supplicant/wpa_supplicant.conf"
+set -o pipefail
+wpa_passphrase "${WPA_ESSID}" "${WPA_PASSWORD}" | tee -a "/etc/wpa_supplicant/wpa_supplicant.conf"
 EOF
 elif [ -v WPA_ESSID ]; then
 cat >> "${ROOTFS_DIR}/etc/wpa_supplicant/wpa_supplicant.conf" << EOL