diff --git a/classes/cache/CacheApc.php b/classes/cache/CacheApc.php
index e32c04ad6..ae84e3144 100644
--- a/classes/cache/CacheApc.php
+++ b/classes/cache/CacheApc.php
@@ -34,9 +34,12 @@ class CacheApcCore extends Cache
 	public function __construct()
 	{
 		$this->keys = array();
-		$cache_info = apc_cache_info('user');
+		$cache_info = apc_cache_info( ( extension_loaded('apcu') === true ) ? '' : 'user' );
 		foreach ($cache_info['cache_list'] as $entry)
-			$this->keys[$entry['info']] = $entry['ttl'];
+			if ( extension_loaded('apcu') === true )
+				$this->keys[$entry['key']] = $entry['ttl'];
+			else
+				$this->keys[$entry['info']] = $entry['ttl'];
 	}
 
 	/**