diff --git a/index.html b/index.html
index 83f8841..a8357c5 100644
--- a/index.html
+++ b/index.html
@@ -324,6 +324,7 @@
     </script>
 
     <script id="login" type="text/x-handlebars-template">
+      <div class="loading">Carregando...</div>
       <form id="login-form" class="login">
         <div class="message hide"></div>
         <div class="username">
diff --git a/js/main.js b/js/main.js
index f7aec7e..cfadbfd 100644
--- a/js/main.js
+++ b/js/main.js
@@ -660,6 +660,12 @@ define(['handlebars', 'fastclick', 'handlebars_helpers'], function(Handlebars, F
       var message = $('.signup .message');
       message.hide();
       message.text('');
+
+      var signup = $(this).parents('form.signup');
+      var loading = $('.login-container .loading');
+      loading.show();
+      signup.hide();
+
       $.ajax({
         type: 'post',
         url: host + '/api/v1/register',
@@ -669,6 +675,9 @@ define(['handlebars', 'fastclick', 'handlebars_helpers'], function(Handlebars, F
       }).fail(function( /*data*/ ) {
         message.show();
         message.text('Não foi possível efetuar o cadastro');
+      }).always(function() {
+        loading.hide();
+        signup.show();
       });
       e.preventDefault();
     });
diff --git a/sass/_proposal_detail.scss b/sass/_proposal_detail.scss
index ecde649..912c8bb 100644
--- a/sass/_proposal_detail.scss
+++ b/sass/_proposal_detail.scss
@@ -1,4 +1,9 @@
 .proposal-detail {
+  .login-container {
+    .loading {
+      text-align: center;
+    }
+  }
   li {
     a {
       text-decoration: none;
--
libgit2 0.21.2