diff --git a/javascripts/theme.js b/javascripts/theme.js
index 892ced7..38b72a7 100644
--- a/javascripts/theme.js
+++ b/javascripts/theme.js
@@ -129,6 +129,9 @@ $(function() {
   var timestamp = ((new Date().getTime() / 1000) % 86400 ) / (86400 / 440);
   $('#top-menu').css('background-position', '0 -' + timestamp + 'px');
 
+  // don't allow assigning issues to Entr'ouvert group
+  $('body.controller-issues #issue_assigned_to_id [value=21]').hide();
+
   if ($('body.controller-issues.action-new').length == 1) {
     alter_new_issue_page();
     return;