diff --git a/app/views/admin/venue_management_contracts/_index.html.erb b/app/views/admin/venue_management_contracts/_index.html.erb
index c53e4e7..23e7757 100644
--- a/app/views/admin/venue_management_contracts/_index.html.erb
+++ b/app/views/admin/venue_management_contracts/_index.html.erb
@@ -19,7 +19,8 @@
           <td><%= contract.venue_management_main.title %></td>
         <% end %>
         <td>
-          <%= link_to contract.case_no, (@venue_management_page_url.blank? ? "#" : "/#{I18n.locale}"+@venue_management_page_url+"/#{contract.case_no.strip}-#{contract.id}?method=show_contract"), :target => '_self' %>
+          <% case_no = (contract.case_no.nil? ? t(:empty) : contract.case_no) %>
+          <%= link_to case_no, (@venue_management_page_url.blank? ? "#" : "/#{I18n.locale}"+@venue_management_page_url+"/#{case_no.to_s.strip}-#{contract.id}?method=show_contract"), :target => '_self' %>
 
           <div class="quick-edit">
             <ul class="nav nav-pills">
diff --git a/app/views/venue_managements/show_contract.html.erb b/app/views/venue_managements/show_contract.html.erb
index 014471f..e7a7a4d 100644
--- a/app/views/venue_managements/show_contract.html.erb
+++ b/app/views/venue_managements/show_contract.html.erb
@@ -11,7 +11,8 @@
   <tbody>
     <tr>
       <th class="venue_managementive-title-field"><%= t('vm_contract.case_no') %></th>
-      <td class="venue_managementive-title-value"><%= @venue_management_contract.venue_management_inviting.case_no %></td>
+      <% case_no = (@venue_management_contract.case_no.nil? ? t(:empty) : @venue_management_contract.case_no) %>
+      <td class="venue_managementive-title-value"><%= case_no %></td>
     </tr>
     <tr>
       <th class="venue_managementive-title-field"><%= t('vm_inviting.type') %></th>