missing tracker from prop name

templates/local.conf.j2

@@ -327,7 +327,7 @@ lr.tracker.type = piwik
 lr.tracker.api.url = {{ clarin_dspace_tracker_api_url | default('') }}
 lr.tracker.api.auth.token = {{ clarino_tracker_api_token | default('') }}
 lr.tracker.oai.site_id = {{ clarin_dspace_tracker_site_id  | default('') }}
-lr.tracker.bitstream.site_id = {{ clarin_dspace_tracker_bistream_site_id |default('') }}
+lr.tracker.bitstream.site_id = {{ clarin_dspace_tracker_bistream_site_id |default(clarin_dspace_tracker_site_id) }}
 lr.statistics.api.url = {{ clarin_dspace_tracker_url | default('https://stats.uib.no/piwik.php') }}
 lr.statistics.report.path = ${dspace.dir}/piwik_reports
 lr.statistics.show_last_n = 7