diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index ff6900b654..8849cb1948 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -4925,8 +4925,6 @@ int cmd_pack_objects(int argc,
 		OPT_CALLBACK_F(0, "stdin-packs", &stdin_packs, N_("mode"),
 			     N_("read packs from stdin"),
 			     PARSE_OPT_OPTARG, parse_stdin_packs_mode),
-		OPT_BOOL(0, "stdin-packs", &stdin_packs,
-			 N_("read packs from stdin")),
 		OPT_BOOL(0, "stdout", &pack_to_stdout,
 			 N_("output pack to stdout")),
 		OPT_BOOL(0, "include-tag", &include_tag,