For bnc#818044
Based on http://cgit.freedesktop.org/systemd/systemd/patch/?id=67d6621059085963a2a908a3ea99ced3b0ca789e
---
 systemctl.c |    5 +++++
 1 file changed, 5 insertions(+)

--- systemd-208/src/systemctl/systemctl.c
+++ systemd-208/src/systemctl/systemctl.c	2014-01-21 13:00:52.910736187 +0000
@@ -4453,6 +4453,11 @@ static int enable_unit(DBusConnection *b
         if (r < 0)
                 return r;
 
+        /* If the operation was fully executed by the SysV compat,
+         * let's finish early */
+        if (strv_isempty(mangled_names))
+                return 0;
+
         if (!bus || avoid_bus()) {
                 if (streq(verb, "enable")) {
                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);