diff --git a/app/assets/javascripts/new_design/champs/multiple_drop_down_list.js b/app/assets/javascripts/new_design/champs/multiple_drop_down_list.js
index 02125aeae..d33d0b0b1 100644
--- a/app/assets/javascripts/new_design/champs/multiple_drop_down_list.js
+++ b/app/assets/javascripts/new_design/champs/multiple_drop_down_list.js
@@ -1,6 +1,7 @@
 document.addEventListener('turbolinks:load', function() {
   $('select.select2').select2({
-    'language': 'fr'
+    'language': 'fr',
+    'width': '100%'
   });
 
   $('select.select2-limited').select2({