diff --git a/htdocs/core/class/translate.class.php b/htdocs/core/class/translate.class.php
index 3e932f84be7..b263a35a75d 100644
--- a/htdocs/core/class/translate.class.php
+++ b/htdocs/core/class/translate.class.php
@@ -198,7 +198,7 @@ class Translate {
 				// Enable cache of lang file in memory (not by default)
 				$usecachekey='';
 				// Using a memcached server
-				if (! empty($conf->memcached->enabled))
+				if (! empty($conf->memcached->enabled) && ! empty($conf->global->MEMCACHED_SERVER))
 				{
 					$usecachekey=$newdomain.'_'.$langofdir;
 				}