diff --git a/Model/ResourceModel/Slider/Collection.php b/Model/ResourceModel/Slider/Collection.php
index da3a279..7456bbc 100644
--- a/Model/ResourceModel/Slider/Collection.php
+++ b/Model/ResourceModel/Slider/Collection.php
@@ -75,7 +75,6 @@ protected function _construct()
      * @param \Psr\Log\LoggerInterface                                     $logger
      * @param \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy
      * @param \Magento\Framework\Event\ManagerInterface                    $eventManager
-     * @param \Zend_Db_Adapter_Abstract                                    $connection
      * @param \Magento\Framework\Model\ResourceModel\Db\AbstractDb              $resource
      */
     public function __construct(
@@ -85,7 +84,7 @@ public function __construct(
         \Magento\Framework\Event\ManagerInterface $eventManager,
         \Magento\Store\Model\StoreManagerInterface $storeManager,
         \Magento\Framework\Stdlib\DateTime\Timezone $stdTimezone,
-        $connection = null,
+        \Magento\Framework\DB\Adapter\AdapterInterface $connection = null,
         \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource = null
     ) {
         parent::__construct($entityFactory, $logger, $fetchStrategy, $eventManager, $connection, $resource);