diff --git a/lib/fluent/command/fluentd.rb b/lib/fluent/command/fluentd.rb
index d14d8fece6..a331bc1183 100644
--- a/lib/fluent/command/fluentd.rb
+++ b/lib/fluent/command/fluentd.rb
@@ -336,7 +336,7 @@
   worker = Fluent::Supervisor.new(opts)
   worker.configure
 
-  if opts[:daemonize]
+  if opts[:daemonize] && opts[:standalone_worker]
     require 'fluent/daemonizer'
     args = ARGV.dup
     i = args.index('--daemon')