diff --git a/calebasse/static/css/agenda.css b/calebasse/static/css/agenda.css
index f4961ed..0665634 100644
--- a/calebasse/static/css/agenda.css
+++ b/calebasse/static/css/agenda.css
@@ -281,4 +281,8 @@ h3 .icon-comment {
 
 #activity #print-button-therapeutes-activity {
     float: right;
+}
+
+.changed {
+    border-color: #f00;
 }
\ No newline at end of file
diff --git a/calebasse/static/js/calebasse.agenda.js b/calebasse/static/js/calebasse.agenda.js
index 2f35134..d17da9c 100644
--- a/calebasse/static/js/calebasse.agenda.js
+++ b/calebasse/static/js/calebasse.agenda.js
@@ -344,6 +344,10 @@ function event_dialog(url, title, width, btn_text) {
 
 (function($) {
   $(function() {
+      $('#actes .frame select').on('change', function() {
+          $(this).addClass('changed');
+      });
+
       $('#tabs').tabs({
           load: function(event, ui) {
               var tab = $(ui.tab).attr('id').split('-');