diff --git a/frontend/views/layouts/main.php b/frontend/views/layouts/main.php
index f9b952a..631ef40 100755
--- a/frontend/views/layouts/main.php
+++ b/frontend/views/layouts/main.php
@@ -176,7 +176,7 @@ JS;
           </ul>
         </div>
         <div class="style btns-menu-mob">
-          <div class="style"><a href="<?=Url::to(['book/add'])?>" class="btn_ add-book"><span>Додати книгу</span></a></div>
+          <div class="style"><a href="<?=\Yii::$app->user->isGuest ? Url::to(['site/register']) : Url::to(['book/add'])?>" class="btn_ add-book"><span>Додати книгу</span></a></div>
           <div class="style"><a href="<?=Url::to(['support/search'])?>" class="btn_ to-support">Підтримати</a></div>
         </div>
       </div>
--
libgit2 0.21.4