diff --git a/app/views/projects/invite_members_by_mail.html.erb b/app/views/projects/invite_members_by_mail.html.erb
index 089efeb08..d590c1608 100644
--- a/app/views/projects/invite_members_by_mail.html.erb
+++ b/app/views/projects/invite_members_by_mail.html.erb
@@ -31,7 +31,7 @@
             $("#valid_email").text("<%= l(:label_email_format_error)%>");
             return false;
         }
-        else if(email.split('@')[0].length >= 20)
+        else if(email.split('@')[0].length > 20)
         {
             $("#valid_email").text("邮箱名过长,最长为20个字符");
             return false;
@@ -96,6 +96,7 @@
       <% @inviter_lists.each do |inviter_list| %>
           <table>
             <tbody>
+            <% if inviter_list.user != nil %>
             <tr>
               <td class="email"><%= inviter_list.user.mail %></td>
               <td class="text-name">
@@ -108,6 +109,7 @@
               <td class="text-status"><%= status_for_ivitied(inviter_list, @project) %></td>
               <!--<td class="text-time"><%#= time_tag(inviter_list.created_at).html_safe %></td>-->
             </tr>
+            <% end %>
             </tbody>
           </table>
       <% end %>