diff --git a/src/Types/File.php b/src/Types/File.php
index bce3912..df241f1 100644
--- a/src/Types/File.php
+++ b/src/Types/File.php
@@ -32,7 +32,7 @@ public function setFileId(string $fileId): File
 
   public function setFileUniqueId(string $fileUniqueId): File
   {
-    return $this->file_unique_id = $fileUniqueId;
+    $this->file_unique_id = $fileUniqueId;
     return $this;
   }