diff --git a/lib/Entities/NewsletterLinkEntity.php b/lib/Entities/NewsletterLinkEntity.php
index f90dd24788..20e6fbe45f 100644
--- a/lib/Entities/NewsletterLinkEntity.php
+++ b/lib/Entities/NewsletterLinkEntity.php
@@ -22,20 +22,20 @@ class NewsletterLinkEntity {
   /**
    * @ORM\ManyToOne(targetEntity="MailPoet\Entities\NewsletterEntity")
    * @ORM\JoinColumn(name="newsletter_id", referencedColumnName="id")
-   * @var NewsletterEntity|null
+   * @var NewsletterEntity
    */
   private $newsletter;
 
   /**
    * @ORM\ManyToOne(targetEntity="MailPoet\Entities\SendingQueueEntity")
    * @ORM\JoinColumn(name="queue_id", referencedColumnName="id")
-   * @var SendingQueueEntity|null
+   * @var SendingQueueEntity
    */
   private $queue;
 
   /**
    * @ORM\Column(type="string")
-   * @var string|null
+   * @var string
    */
   private $url;
 
@@ -54,6 +54,13 @@ class NewsletterLinkEntity {
    */
   private $clicks;
 
+  public function __construct(NewsletterEntity $newsletter, SendingQueueEntity $queue, string $url, string $hash) {
+    $this->newsletter = $newsletter;
+    $this->queue = $queue;
+    $this->url = $url;
+    $this->hash = $hash;
+  }
+
   /**
    * @return NewsletterEntity|null
    */
@@ -70,17 +77,11 @@ class NewsletterLinkEntity {
     return $this->queue;
   }
 
-  /**
-   * @return string|null
-   */
-  public function getUrl() {
+  public function getUrl(): string {
     return $this->url;
   }
 
-  /**
-   * @return string|null
-   */
-  public function getHash() {
+  public function getHash(): string {
     return $this->hash;
   }
 
diff --git a/lib/Entities/StatisticsClickEntity.php b/lib/Entities/StatisticsClickEntity.php
index aab0af2be5..f1aa6ae7d1 100644
--- a/lib/Entities/StatisticsClickEntity.php
+++ b/lib/Entities/StatisticsClickEntity.php
@@ -73,4 +73,39 @@ class StatisticsClickEntity {
     $this->safelyLoadToOneAssociation('link');
     return $this->link;
   }
+
+  /**
+   * @param NewsletterEntity|null $newsletter
+   */
+  public function setNewsletter($newsletter) {
+    $this->newsletter = $newsletter;
+  }
+
+  /**
+   * @param SendingQueueEntity|null $queue
+   */
+  public function setQueue($queue) {
+    $this->queue = $queue;
+  }
+
+  /**
+   * @param int|null $subscriberId
+   */
+  public function setSubscriberId($subscriberId) {
+    $this->subscriberId = $subscriberId;
+  }
+
+  /**
+   * @param NewsletterLinkEntity|null $link
+   */
+  public function setLink($link) {
+    $this->link = $link;
+  }
+
+  /**
+   * @param int $count
+   */
+  public function setCount(int $count) {
+    $this->count = $count;
+  }
 }
diff --git a/lib/Entities/StatisticsOpenEntity.php b/lib/Entities/StatisticsOpenEntity.php
index 4e53c456fe..7444b265e7 100644
--- a/lib/Entities/StatisticsOpenEntity.php
+++ b/lib/Entities/StatisticsOpenEntity.php
@@ -51,4 +51,25 @@ class StatisticsOpenEntity {
     $this->safelyLoadToOneAssociation('queue');
     return $this->queue;
   }
+
+  /**
+   * @param NewsletterEntity|null $newsletter
+   */
+  public function setNewsletter($newsletter) {
+    $this->newsletter = $newsletter;
+  }
+
+  /**
+   * @param SendingQueueEntity|null $queue
+   */
+  public function setQueue($queue) {
+    $this->queue = $queue;
+  }
+
+  /**
+   * @param int|null $subscriberId
+   */
+  public function setSubscriberId($subscriberId) {
+    $this->subscriberId = $subscriberId;
+  }
 }
diff --git a/lib/Entities/StatisticsWooCommercePurchaseEntity.php b/lib/Entities/StatisticsWooCommercePurchaseEntity.php
index 0f7df60706..d9027bd57a 100644
--- a/lib/Entities/StatisticsWooCommercePurchaseEntity.php
+++ b/lib/Entities/StatisticsWooCommercePurchaseEntity.php
@@ -111,4 +111,11 @@ class StatisticsWooCommercePurchaseEntity {
   public function getOrderId() {
     return $this->orderId;
   }
+
+  /**
+   * @param SubscriberEntity|null $subscriber
+   */
+  public function setSubscriber($subscriber) {
+    $this->subscriber = $subscriber;
+  }
 }