diff --git a/fedora-gnome/thunderbird.sh b/fedora-gnome/thunderbird.sh
index 9a1d625..7050eba 100644
--- a/fedora-gnome/thunderbird.sh
+++ b/fedora-gnome/thunderbird.sh
@@ -26,4 +26,8 @@ download() {
 
 sudo dnf install -y thunderbird
 
-echo 'QUBES_GPG_DOMAIN=sys-gpg' | sudo tee -a /etc/environment
+# Change the GPG Domain name appropriately
+echo 'QUBES_GPG_DOMAIN=vault' | sudo tee -a /etc/environment
+
+# Disable hardened_malloc (for now)
+sudo rm /etc/ld.so.preload