diff --git a/j1939acd.c b/j1939acd.c
index 73caaa1..0a0da7d 100644
--- a/j1939acd.c
+++ b/j1939acd.c
@@ -44,6 +44,7 @@ static const char help_msg[] =
 	"\n"
 	"Examples:" "\n"
 	"j1939acd -r 100,80-120 -c /tmp/1122334455667788.jacd 1122334455667788" "\n"
+	"j1939acd -r 100,80-120 -c /tmp/1122334455667788.jacd 1122334455667788 vcan0" "\n"
 	;
 
 #ifdef _GNU_SOURCE