diff --git a/src/freedombone-app-mumble b/src/freedombone-app-mumble
index 8a785f3c..7530c9af 100755
--- a/src/freedombone-app-mumble
+++ b/src/freedombone-app-mumble
@@ -43,6 +43,7 @@ MUMBLE_DATABASE="mumble-server.sqlite"
 MUMBLE_CONFIG_FILE="mumble-server.ini"
 
 mumble_variables=(MY_USERNAME
+                  DEFAULT_DOMAIN_NAME
                   MUMBLE_PORT
                   ONION_ONLY
                   ADMIN_USERNAME)