diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 9b167172..20fa4faf 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -274,7 +274,7 @@ class CI_Cache_file extends CI_Driver {
 
 		$data = unserialize(file_get_contents($this->_cache_path.$id));
 
-		if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl'])
+		if ($data && $data['ttl'] > 0 && time() > $data['time'] + $data['ttl'])
 		{
 			file_exists($this->_cache_path.$id) && unlink($this->_cache_path.$id);
 			return FALSE;