polygon_geojson: Nominatim_Config.Search_AreaPolygons ? 1 : 0,
viewbox: search_params.get('viewbox'),
bounded: search_params.get('bounded'),
- dedupe: search_params.get('dedupe'),
+ dedupe: (!search_params.has('dedupe') || search_params.get('dedupe') === '1') ? 1 : 0,
'accept-language': search_params.get('accept-language'),
countrycodes: search_params.get('countrycodes'),
limit: search_params.get('limit'),