1 files changed, 3 insertions, 0 deletions

diff --git a/src/firejail/usage.c b/src/firejail/usage.c
index c8bed06e3..db3c25a5a 100644
--- a/src/firejail/usage.c
+++ b/src/firejail/usage.c
@@ -94,6 +94,9 @@ void usage(void) {
         printf("    --ls=name|pid dir_or_filename - list files in sandbox container.\n");
 #ifdef HAVE_NETWORK     
         printf("    --mac=xx:xx:xx:xx:xx:xx - set interface MAC address.\n");
+#endif
+        printf("    --machine-id - preserve /etc/machine-id\n");
+#ifdef HAVE_NETWORK     
         printf("    --mtu=number - set interface MTU.\n");
 #endif
         printf("    --name=name - set sandbox name.\n");