diff --git a/app/views/server/websites/_list.html.erb b/app/views/server/websites/_list.html.erb
index 73408181d412e2e7ec70f7daa94eafb9f3b1db81..a2d7c9fb8957c44f63d94c18adc462d7a6b72084 100644
--- a/app/views/server/websites/_list.html.erb
+++ b/app/views/server/websites/_list.html.erb
@@ -28,7 +28,7 @@
             <%= link_to website.university, [:server, website.university] %>
           </td>
           <td>
-            <%= link_to "Sync version", refresh_server_website_path(website), method: :post, class: button_classes %>
+            <%= link_to "Sync version", refresh_server_website_path(website), method: :post, class: button_classes if website.url.present? %>
           </td>
         </tr>
       <% end %>