diff --git a/src/cmd/server/handler/testdata/index.tmpl b/src/cmd/server/handler/testdata/index.tmpl
index bc3631d..2ab6ed8 100644
--- a/src/cmd/server/handler/testdata/index.tmpl
+++ b/src/cmd/server/handler/testdata/index.tmpl
@@ -43,6 +43,7 @@
           {{ end }}
         {{ end }}
         <button type="submit">Submit</button>
+        <code>Preview someday</code>
       </form>
     </div>
   </body>