diff --git a/Kafka/Struct.php b/Kafka/Struct.php
index 9508f150..48f11662 100644
--- a/Kafka/Struct.php
+++ b/Kafka/Struct.php
@@ -14,7 +14,7 @@ class Struct
 	public Message $message;
 	public string $topic;
 
-	public string $value;
+	public ?string $value;
 	public int $part;
 
 	/**