diff --git a/git-bisect.sh b/git-bisect.sh
index 8fbda2e2c7..eefc8eec88 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -4,7 +4,7 @@ USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|
 LONG_USAGE='git bisect help
 	print this long help message.
 git bisect start [--term-{old,good}=<term> --term-{new,bad}=<term>]
-		 [--no-checkout] [<bad> [<good>...]] [--] [<pathspec>...]
+		 [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<pathspec>...]
 	reset bisect state and start bisection.
 git bisect (bad|new) [<rev>]
 	mark <rev> a known-bad revision/