diff --git a/builtin/checkout.c b/builtin/checkout.c
index 4416b82bfd..11308ab80c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1423,7 +1423,7 @@ static struct option *add_common_switch_branch_options(
 	struct checkout_opts *opts, struct option *prevopts)
 {
 	struct option options[] = {
-		OPT_BOOL(0, "detach", &opts->force_detach, N_("detach HEAD at named commit")),
+		OPT_BOOL('d', "detach", &opts->force_detach, N_("detach HEAD at named commit")),
 		OPT_SET_INT('t', "track",  &opts->track, N_("set upstream info for new branch"),
 			BRANCH_TRACK_EXPLICIT),
 		OPT_STRING(0, "orphan", &opts->new_orphan_branch, N_("new-branch"), N_("new unparented branch")),