diff --git a/GlobalCache.php b/GlobalCache.php
index c74dc14d5e..345f8ea932 100644
--- a/GlobalCache.php
+++ b/GlobalCache.php
@@ -130,7 +130,7 @@
 
 $wgQueryCacheLimit = 5000;
 
-// 7 days
+// 10 days
 $wgParserCacheExpireTime = 86400 * 10;
 
 // 3 days