diff --git a/frontend/views/layouts/main.php b/frontend/views/layouts/main.php
index 5fe9914..039400d 100755
--- a/frontend/views/layouts/main.php
+++ b/frontend/views/layouts/main.php
@@ -90,7 +90,13 @@ $this->registerJs("
         <title><?= Seo::widget([ 'row'=>'title'])?></title>
         <?= Seo::widget([ 'row'=>'description'])?>
         <?= Seo::widget([ 'row'=>'meta'])?>
-        <?php $this->registerLinkTag(['rel' => 'canonical', 'href' => substr(Yii::$app->urlManager->baseUrl.Yii::$app->request->url, 0, strpos(Yii::$app->urlManager->baseUrl.Yii::$app->request->url, '?')) ]); ?>
+        <?php
+            if (strpos(Yii::$app->urlManager->baseUrl.Yii::$app->request->url, '?')) {
+                $this->registerLinkTag(['rel' => 'canonical', 'href' => substr(Yii::$app->urlManager->baseUrl.Yii::$app->request->url, 0, strpos(Yii::$app->urlManager->baseUrl.Yii::$app->request->url, '?')) ]);
+            } else {
+                $this->registerLinkTag(['rel' => 'canonical', 'href' => Yii::$app->urlManager->baseUrl.Yii::$app->request->url ]);
+            }
+        ?>
         <link rel="shortcut icon" href="<?= Yii::$app->urlManager->baseUrl ?>/img/favicon.ico" type="image/x-icon"/>
         <?php $this->head () ?>
 
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libgit2 0.21.4