diff --git a/src/common/core/ui/confs/default-server-http/ui.conf b/src/common/core/ui/confs/default-server-http/ui.conf
index ca346d210..44e98af27 100644
--- a/src/common/core/ui/confs/default-server-http/ui.conf
+++ b/src/common/core/ui/confs/default-server-http/ui.conf
@@ -65,7 +65,7 @@ location /setup {
     proxy_buffering on;
 
     # Response body modifications
-    header_filter_by_luea_block {
+    header_filter_by_lua_block {
         ngx.header.content_length = nil
     }
     body_filter_by_lua_block {