diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index 09b3e389f97..604909c5dad 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -720,6 +720,13 @@ $wgLocalMessageCache = false;
  */
 $wgLocalMessageCacheSerialized = true;
 
+/**
+ * Cache messages in MesssageCache per language, instead of all them together.
+ * Enable this if you have thousands of messages in MediaWiki namespace in many
+ * different languages.
+ */
+$wgPerLanguageCaching = false;
+
 /**
  * Directory for compiled constant message array databases
  * WARNING: turning anything on will just break things, aaaaaah!!!!