diff --git a/phpBB/phpbb/cache/driver/memcached.php b/phpBB/phpbb/cache/driver/memcached.php
index 808e15afe8..7d66759ec2 100644
--- a/phpBB/phpbb/cache/driver/memcached.php
+++ b/phpBB/phpbb/cache/driver/memcached.php
@@ -65,7 +65,7 @@ class memcached extends \phpbb\cache\driver\memory
 			$this->memcached->setOption(\Memcached::OPT_COMPRESSION, false);
 		}
 
-		foreach (explode(',', PHPBB_ACM_MEMCACHE) as $u)
+		foreach (explode(',', PHPBB_ACM_MEMCACHED) as $u)
 		{
 			preg_match('#(.*)/(\d+)#', $u, $parts);
 			$this->memcached->addServer(trim($parts[1]), (int) trim($parts[2]));