diff --git a/man/direwolf.1 b/man/direwolf.1
index 93f786d..aee9ee2 100644
--- a/man/direwolf.1
+++ b/man/direwolf.1
@@ -155,6 +155,9 @@ x = Silence FX.25 information.
 .BI "-t " "n"
 Text colors.  0=disabled. 1=default.  2,3,4,... alternatives.  Use 9 to test compatibility with your terminal.
 
+.TP
+.BI "-O "
+Redirects all printed output to stderr so stdout can be used as audio device.
 
 .TP
 .B "-p "