diff --git a/scripts/install b/scripts/install
index ed872f0..124461c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -135,7 +135,7 @@ allowed_local_3pids_email=""
 allowed_local_3pids_msisdn=""
 allow_guest_access="false"
 allow_guest_access="false"
-account_threepid_delegates_msisdn="#email: "
+account_threepid_delegates_msisdn=""
 default_identity_server="https://matrix.org"
 auto_join_rooms="#auto_join_room:""$server_name"
 autocreate_auto_join_rooms="false"