diff --git a/config/site_settings.yml b/config/site_settings.yml
index a1538e50851..b79b92470ec 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -863,13 +863,14 @@ posting:
     default: 0
   post_excerpt_maxlength:
     default: 300
+    max: 1000
     locale_default:
       ja: 120
       zh_CN: 120
       zh_TW: 120
   topic_excerpt_maxlength:
     default: 220
-    max: 999
+    max: 1000
     locale_default:
       ja: 120
       zh_CN: 120