diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index ce2c2b1..5170de8 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -71,7 +71,7 @@
 			return FALSE;
 		}
 
-		$data = unserialize(read_file($this->_cache_path.$id));
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
 
 		if (time() >  $data['time'] + $data['ttl'])
 		{
@@ -165,7 +165,7 @@
 			return FALSE;
 		}
 
-		$data = unserialize(read_file($this->_cache_path.$id));
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
 
 		if (is_array($data))
 		{