diff --git a/web/src/js/modules/popup.js b/web/src/js/modules/popup.js
index 583b8863..75b1a877 100644
--- a/web/src/js/modules/popup.js
+++ b/web/src/js/modules/popup.js
@@ -78,7 +78,7 @@ $(document).ready(function () {
 
         var link = $('.but_btn_popup').data('link');
 
-        link = link+'?'+decodeURIComponent($.param({weekdays: weekdays}));
+        link = link+'?'+decodeURIComponent($.param({weekdays: weekdays}, true));
         $('.but_btn_popup').attr('href', link);
     });
 });
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