diff --git a/javascript.html b/javascript.html
index 5229ab6b0d..a851d4b403 100644
--- a/javascript.html
+++ b/javascript.html
@@ -196,7 +196,7 @@ $('#myModal').on('show.bs.modal', function (e) {
   <a data-toggle="modal" href="#myModal" class="btn btn-primary btn-large">Launch demo modal</a>
 
   <!-- Modal -->
-  <div class="modal" id="myModal">
+  <div class="modal fade" id="myModal">
     <div class="modal-dialog">
       <div class="modal-content">
         <div class="modal-header">