cmd/torrent-magnet/main.go | 2 +-

diff --git a/cmd/torrent-magnet/main.go b/cmd/torrent-magnet/main.go
index a1d530779ddd32eec3bbd90a3775b64160501660..3d4bf137da5503ff012d186bfb178ec2766e8708 100644
--- a/cmd/torrent-magnet/main.go
+++ b/cmd/torrent-magnet/main.go
@@ -9,7 +9,7 @@ 	"github.com/anacrolix/torrent/metainfo"
 )
 
 func main() {
-	tagflag.Parse(nil)
+	tagflag.Parse(nil, tagflag.Description("reads a torrent file from stdin and writes out its magnet link to stdout"))
 
 	mi, err := metainfo.Load(os.Stdin)
 	if err != nil {