diff --git a/administrator/components/com_joomlaupdate/restore.php b/administrator/components/com_joomlaupdate/restore.php
index d832b10862c88..00a8bde377851 100644
--- a/administrator/components/com_joomlaupdate/restore.php
+++ b/administrator/components/com_joomlaupdate/restore.php
@@ -874,7 +874,7 @@ public function __construct()
 	 */
 	public function __wakeup()
 	{
-		if ($this->currentPartNumber >= 0)
+		if ($this->currentPartNumber >= 0 && !empty($this->archiveList[$this->currentPartNumber]))
 		{
 			$this->fp = @fopen($this->archiveList[$this->currentPartNumber], 'rb');
 			if ((is_resource($this->fp)) && ($this->currentPartOffset > 0))