diff --git a/lib/net/servers/indexer.rb b/lib/net/servers/indexer.rb
index 2779e87d3..9d00d2c71 100644
--- a/lib/net/servers/indexer.rb
+++ b/lib/net/servers/indexer.rb
@@ -189,6 +189,7 @@ module LogStash; module Net; module Servers
 
     def DirectoryRequestHandler(request)
       response = LogStash::Net::Messages::DirectoryResponse.new
+      response.id = request.id
       response.indexers = @indexers.keys
       yield response
     end