diff --git a/grandlyon/scripts/generate-geojson.py b/grandlyon/scripts/generate-geojson.py
index 4f0ed66..277080d 100644
--- a/grandlyon/scripts/generate-geojson.py
+++ b/grandlyon/scripts/generate-geojson.py
@@ -29,6 +29,7 @@ for formdef in FormDef.select():
         formdata = formdef.data_class().get(formdata_id)
         formdata_vars = formdata.get_substitution_variables()
         feature['properties']['message'] = formdata_vars['form_var_message']
+        feature['properties']['datetime'] = formdata_vars['form_receipt_datetime'].strftime('%d/%m/%Y %H:%M')
 
     json.dump(geojson, open(os.path.join(geojson_dir, formdef.url_name + '.json'), 'w'),
             indent=2, cls=JSONEncoder)