diff --git a/dots/firefox/user.js b/dots/firefox/user.js
index da1b72f..5323aa7 100644
--- a/dots/firefox/user.js
+++ b/dots/firefox/user.js
@@ -48,7 +48,7 @@ user_pref("extensions.formautofill.creditCards.enabled", false);
 user_pref("extensions.pocket.enabled", false);
 user_pref("fission.autostart", true);
 user_pref("general.useragent.locale", "en-GB");
-user_pref("identity.fxaccounts.account.device.name", "poq @ {hostname}");
+user_pref("identity.fxaccounts.account.device.name", "poq @ {HOSTNAME}");
 user_pref("intl.accept_languages", "en");
 user_pref("layout.css.prefers-color-scheme.content-override", 1);
 user_pref("privacy.donottrackheader.enabled", true);
diff --git a/scripts/99_deploy.sh b/scripts/99_deploy.sh
index 5d6ced3..52011ee 100755
--- a/scripts/99_deploy.sh
+++ b/scripts/99_deploy.sh
@@ -320,6 +320,7 @@ if [ ${operation} == "dots" ] ; then
         file_name=user.js
         file_path=${ffpd}
         deploy_file "${dots_trg}/firefox/${file_name}" "${file_path}/${file_name}"
+        sed -i -e 's/{HOSTNAME}/${HOSTNAME}/g' "${file_path}/${file_name}"
 
         file_name=userChrome.css
         file_path=${ffpd}/chrome