diff --git a/src/jdk.jcmd/share/man/jcmd.md b/src/jdk.jcmd/share/man/jcmd.md
index af3886a915c..97e1c7c4265 100644
--- a/src/jdk.jcmd/share/man/jcmd.md
+++ b/src/jdk.jcmd/share/man/jcmd.md
@@ -33,7 +33,7 @@ jcmd - send diagnostic command requests to a running Java Virtual Machine
 
 ## Synopsis
 
-`jcmd` \[*pid* \| *main-class*\] *command*... \| `PerfCounter.print` \| `-f`
+`jcmd` \[*pid* \| *main-class*\] [`-T`] *command*... \| `PerfCounter.print` \| `-f`
 *filename*
 
 `jcmd` \[`-l`\]
@@ -48,6 +48,9 @@ jcmd - send diagnostic command requests to a running Java Virtual Machine
 :   When used, the `jcmd` utility sends the diagnostic command request to all
     Java processes with the specified name of the main class.
 
+`-T`
+:   When used, the diagnostic commands output starts with a timestamp.
+
 *command*
 :   The `command` must be a valid `jcmd` command for the selected JVM. The list
     of available commands for `jcmd` is obtained by running the `help` command