diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 7078e67dd4..58b624f597 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -2994,78 +2994,6 @@ static int strdup_job(sd_bus_message *reply, char **job) {
         return 1;
 }
 
-int manager_start_slice(
-                Manager *manager,
-                const char *slice,
-                const char *description,
-                const char *after,
-                const char *after2,
-                uint64_t tasks_max,
-                sd_bus_error *error,
-                char **job) {
-
-        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
-        int r;
-
-        assert(manager);
-        assert(slice);
-        assert(job);
-
-        r = sd_bus_message_new_method_call(
-                        manager->bus,
-                        &m,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "StartTransientUnit");
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_open_container(m, 'a', "(sv)");
-        if (r < 0)
-                return r;
-
-        if (!isempty(description)) {
-                r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
-                if (r < 0)
-                        return r;
-        }
-
-        if (!isempty(after)) {
-                r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
-                if (r < 0)
-                        return r;
-        }
-
-        if (!isempty(after2)) {
-                r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
-                if (r < 0)
-                        return r;
-        }
-
-        r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_close_container(m);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_append(m, "a(sa(sv))", 0);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_call(manager->bus, m, 0, error, &reply);
-        if (r < 0)
-                return r;
-
-        return strdup_job(reply, job);
-}
-
 int manager_start_scope(
                 Manager *manager,
                 const char *scope,
diff --git a/src/login/logind.h b/src/login/logind.h
index 7470516fba..498a371361 100644
--- a/src/login/logind.h
+++ b/src/login/logind.h
@@ -166,7 +166,6 @@ int bus_manager_shutdown_or_sleep_now_or_later(Manager *m, const char *unit_name
 
 int manager_send_changed(Manager *manager, const char *property, ...) _sentinel_;
 
-int manager_start_slice(Manager *manager, const char *slice, const char *description, const char *after, const char *after2, uint64_t tasks_max, sd_bus_error *error, char **job);
 int manager_start_scope(Manager *manager, const char *scope, pid_t pid, const char *slice, const char *description, const char *after, const char *after2, sd_bus_message *more_properties, sd_bus_error *error, char **job);
 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job);
 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job);