diff --git a/src/TgBotLib/Objects/ForumTopic.php b/src/TgBotLib/Objects/ForumTopic.php
index 30b8bca..cf2b6ec 100644
--- a/src/TgBotLib/Objects/ForumTopic.php
+++ b/src/TgBotLib/Objects/ForumTopic.php
@@ -7,25 +7,10 @@
 
     class ForumTopic implements ObjectTypeInterface
     {
-        /**
-         * @var int
-         */
-        private $message_thread_id;
-
-        /**
-         * @var string
-         */
-        private $name;
-
-        /**
-         * @var int
-         */
-        private $icon_color;
-
-        /**
-         * @var string|null
-         */
-        private $icon_custom_emoji_id;
+        private int $message_thread_id;
+        private string $name;
+        private int $icon_color;
+        private ?string $icon_custom_emoji_id;
 
         /**
          * Unique identifier of the forum topic
@@ -68,9 +53,7 @@
         }
 
         /**
-         * Returns an array representation of the object
-         *
-         * @return array
+         * @inheritDoc
          */
         public function toArray(): array
         {
@@ -83,15 +66,16 @@
         }
 
         /**
-         * Constructs object from an array representation
-         *
-         * @param array $data
-         * @return ForumTopic
+         * @inheritDoc
          */
-        public static function fromArray(array $data): self
+        public static function fromArray(?array $data): ?ForumTopic
         {
-            $object = new self();
+            if($data === null)
+            {
+                return null;
+            }
 
+            $object = new self();
             $object->message_thread_id = $data['message_thread_id'] ?? null;
             $object->name = $data['name'] ?? null;
             $object->icon_color = $data['icon_color'] ?? null;