diff --git a/app/views/comments/_form.html.erb b/app/views/comments/_form.html.erb
index 03b6caad7..5361b50fb 100644
--- a/app/views/comments/_form.html.erb
+++ b/app/views/comments/_form.html.erb
@@ -5,7 +5,7 @@
     <%= f.text_area :body %>
     <%= f.hidden_field :commentable_type, value: parent.class %>
     <%= f.hidden_field :commentable_id, value: parent.id %>
-    
-    <%= f.submit comment_button_text(parent), :class => "button radius" %>
+
+    <%= f.submit comment_button_text(parent), class: "button radius" %>
   <% end %>
 </div>
diff --git a/app/views/debates/_form.html.erb b/app/views/debates/_form.html.erb
index cc4101c90..85db48200 100644
--- a/app/views/debates/_form.html.erb
+++ b/app/views/debates/_form.html.erb
@@ -33,7 +33,7 @@
   <%= render 'shared/captcha' %>
 
   <div class="actions">
-    <%= f.submit %>
+    <%= f.submit(class: "button radius") %>
   </div>
   <br/>
-<% end %>
\ No newline at end of file
+<% end %>
diff --git a/app/views/devise/confirmations/new.html.erb b/app/views/devise/confirmations/new.html.erb
index 826672f74..8c1a8b126 100644
--- a/app/views/devise/confirmations/new.html.erb
+++ b/app/views/devise/confirmations/new.html.erb
@@ -5,11 +5,11 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true, value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %> 
+    <%= f.email_field :email, autofocus: true, value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %>
   </div>
 
   <div class="actions">
-    <%= f.submit "Resend confirmation instructions" %>
+    <%= f.submit "Resend confirmation instructions", class: "button radius" %>
   </div>
 <% end %>
 
diff --git a/app/views/devise/sessions/new.html.erb b/app/views/devise/sessions/new.html.erb
index ba96a7ecd..53ecfc86e 100644
--- a/app/views/devise/sessions/new.html.erb
+++ b/app/views/devise/sessions/new.html.erb
@@ -19,7 +19,7 @@
   <% end -%>
 
   <div class="actions">
-    <%= f.submit "Entrar" %>
+    <%= f.submit "Entrar", class: "button radius" %>
   </div>
 <% end %>