diff --git a/lib/mpog_software_plugin.rb b/lib/mpog_software_plugin.rb
index f45770a..1c34798 100644
--- a/lib/mpog_software_plugin.rb
+++ b/lib/mpog_software_plugin.rb
@@ -169,6 +169,14 @@ class MpogSoftwarePlugin < Noosfero::Plugin
     [{:title => _('Manage Software'), :url => {:controller => 'mpog_software_plugin', :action => 'archive_software'}}]
   end
 
+
+  def custom_user_registration_attributes user
+    if user.institution
+      community = user.institution.community
+      community.add_member user.person
+    end
+  end
+
   protected
 
   def calc_percentage_registration person
diff --git a/views/mpog_software_plugin/create_institution.html.erb b/views/mpog_software_plugin/create_institution.html.erb
index c13c320..98d11e0 100644
--- a/views/mpog_software_plugin/create_institution.html.erb
+++ b/views/mpog_software_plugin/create_institution.html.erb
@@ -29,7 +29,7 @@
       <span class='required-field'>
         <div class="formfield type-text">
           <%= inst.label("cnpj" ,_("CNPJ"), :class=>"formlabel") %>
-          <%= required inst.text_field(:cnpj) %>
+          <%= required inst.text_field(:cnpj, :placeholder=>"99.999.999/9999-99") %>
         </div>
       </span>
 
--
libgit2 0.21.2