diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index c4caef04..69917747 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -541,7 +541,7 @@ matrix_mautrix_twitter_login_shared_secret: "{{ matrix_synapse_ext_password_prov
 
 # We'd like to force-set people with external Postgres to SQLite, so the bridge role can complain
 # and point them to a migration path.
-matrix_mautrix_twitter_database_engine: "{{ 'postgres' if matrix_postgres_enabled else 'sqlite' }}"
+matrix_mautrix_twitter_database_engine: "{{ 'postgres' if matrix_postgres_enabled else '' }}"
 matrix_mautrix_twitter_database_password: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'mau.twt.db') | to_uuid }}"
 
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