diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index ce71445..7ec2380 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -103,7 +103,7 @@
 			}
 		}
 
-		isset($config['key_prefix']) AND $this->key_prefix = $config['key_prefix'];
+		isset($config['key_prefix']) && $this->key_prefix = $config['key_prefix'];
 
 		if (isset($config['backup']) && in_array('cache_'.$config['backup'], $this->valid_drivers))
 		{