diff --git a/lib/fluent/supervisor.rb b/lib/fluent/supervisor.rb
index 5902a123e4..604379cc45 100644
--- a/lib/fluent/supervisor.rb
+++ b/lib/fluent/supervisor.rb
@@ -502,6 +502,7 @@ def show_plugin_config
     end
 
     def supervise
+      Process.setproctitle("supervisor:#{@process_name}") if @process_name
       $log.info "starting fluentd-#{Fluent::VERSION}", pid: Process.pid
 
       rubyopt = ENV["RUBYOPT"]