diff --git a/app/views/projects/invite_members_by_mail.html.erb b/app/views/projects/invite_members_by_mail.html.erb
index bb98b3356..7b3a4c552 100644
--- a/app/views/projects/invite_members_by_mail.html.erb
+++ b/app/views/projects/invite_members_by_mail.html.erb
@@ -87,7 +87,7 @@
         <% end %>
       <% end %>
       </br>
-      <% unless @waiters_count == 0 %>
+      <% unless @waiters_count.nil? %>
         <span class="status_inviter">等待加入项目的用户</span><br/>
         <% @inviter_lists.each do |inviter_list| %>
           <% unless inviter_list.user.member_of?(@project) %>