diff --git a/firefox/.env b/firefox/.env
index 17999cd..f49fb27 100644
--- a/firefox/.env
+++ b/firefox/.env
@@ -3,9 +3,11 @@ MYVNC_FIREFOX_PORT=
 MYVNC_FIREFOX_VNCPASS=
 
 MYVNC_FIREFOX_CUSTOM_TITLE=
+
+MYVNC_DOMAIN=
 MYVNC_FIREFOX_PROXYPATH=
 
 MYVNC_FIREFOX_URL=
 MYVNC_FIREFOX_OPTS=
 
-MYVNC_FIREFOX_VNCSHARING=
+MYVNC_FIREFOX_VNCSHARING=
\ No newline at end of file