diff --git a/homebrew/td-agent.rb b/homebrew/td-agent.rb
index 6f6136c..ac25c67 100644
--- a/homebrew/td-agent.rb
+++ b/homebrew/td-agent.rb
@@ -73,7 +73,7 @@ def caveats
 
     You can invoke td-agent manually via td-agent command without launchctl:
 
-        td-agent --pid #{var}/run/td-agent/td-agent.pid
+        td-agent --daemon #{var}/run/td-agent/td-agent.pid
 
     If you want to know the details of Fluentd, see Fluentd documents at: