2 files changed, 14 insertions, 0 deletions

diff --git a/src/man/firejail-profile.txt b/src/man/firejail-profile.txt
index 007374c75..fa522c154 100644
--- a/src/man/firejail-profile.txt
+++ b/src/man/firejail-profile.txt
@@ -447,6 +447,10 @@ iprange 192.168.1.150,192.168.1.160
 Assign MAC addresses to the last network interface defined by a net command.
 
 .TP
+\fBmachine-id
+Preserve id number in /etc/machine-id file. By default a new random id is generated inside the sandbox.
+
+.TP
 \fBmtu number
 Assign a MTU value to the last network interface defined by a net command.
 
diff --git a/src/man/firejail.txt b/src/man/firejail.txt
index 450f30c68..fdeb9ea3f 100644
--- a/src/man/firejail.txt
+++ b/src/man/firejail.txt
@@ -666,6 +666,16 @@ Example:
 $ firejail \-\-net=eth0 \-\-mac=00:11:22:33:44:55 firefox
 
 .TP
+\fB\-\-machine-id
+Preserve id number in /etc/machine-id file. By default a new random id is generated inside the sandbox.
+.br
+
+.br
+Example:
+.br
+$ firejail \-\-machine-id
+
+.TP
 \fB\-\-mtu=number
 Assign a MTU value to the last network interface defined by a \-\-net option.
 .br