diff --git a/static/montpellier-ville/extra.js b/static/montpellier-ville/extra.js
index cec089a5..a958d8b8 100644
--- a/static/montpellier-ville/extra.js
+++ b/static/montpellier-ville/extra.js
@@ -13,5 +13,10 @@ $(function() {
       }
     });
   });
-  $('.chantier').on('click', function() { $(this).toggleClass('shown'); });
+  if ($('.page-template-roadworks-map').length) {
+    $(document).on('combo:cell-loaded combo:roadworks-loaded', function(ev, elem) {
+      $('.chantier').off('click').on('click', function() { $(this).toggleClass('shown'); });
+    });
+    $(document).trigger('combo:roadworks-loaded');
+  }
 });