diff --git a/app/views/admin/patents/_form.html.erb b/app/views/admin/patents/_form.html.erb
index 6c76bd4..0ca6e38 100644
--- a/app/views/admin/patents/_form.html.erb
+++ b/app/views/admin/patents/_form.html.erb
@@ -212,7 +212,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_patent.publication_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :publish_date, :no_label => true, :format=>"yyyy/MM", :value => @patent.publish_date, :new_record => @patent.new_record? %>
+          <%= f.datetime_picker :publish_date, :no_label => true, :format=>"yyyy/MM/dd", :value => @patent.publish_date, :new_record => @patent.new_record? %>
         </div>
       </div>
 
@@ -220,7 +220,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_patent.application_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :application_date, :no_label => true, :format=>"yyyy/MM", :value => @patent.application_date, :new_record => @patent.new_record? %>
+          <%= f.datetime_picker :application_date, :no_label => true, :format=>"yyyy/MM/dd", :value => @patent.application_date, :new_record => @patent.new_record? %>
         </div>
       </div>
 
@@ -228,7 +228,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_patent.end_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :end_date, :no_label => true, :format=>"yyyy/MM", :value => @patent.end_date, :new_record => @patent.new_record? %>
+          <%= f.datetime_picker :end_date, :no_label => true, :format=>"yyyy/MM/dd", :value => @patent.end_date, :new_record => @patent.new_record? %>
         </div>
       </div>