diff --git a/samples/dbus_client.py b/samples/dbus_client.py
index e89a1e1eb..3318967f8 100755
--- a/samples/dbus_client.py
+++ b/samples/dbus_client.py
@@ -3,6 +3,7 @@
 import dbus
 import dbus.mainloop.glib
 import signal
+import time
 from gi.repository import GLib
 
 def sigint_handler(sig, frame):
@@ -11,17 +12,44 @@ def sigint_handler(sig, frame):
     else:
         raise ValueError("Undefined handler for '{}'".format(sig))
 
-def updated(*args, **kwargs):
+def sig_started(*args, **kwargs):
+    print("Server started")
+
+def sig_stopped(*args, **kwargs):
+    print("Server stopped")
+
+def sig_updated(*args, **kwargs):
     (zone, serial) = args
-    print("Zone %s updated, SOA serial %d" % (zone, serial))
+    print("Updated zone=%s to serial=%d" % (zone, serial))
+
+def sig_submission(*args, **kwargs):
+    (zone, key_tag, kasp_id) = args
+    print("Ready KSK for zone=%s keytag=%u keyid=%s" % (zone, key_tag, kasp_id))
+
+def sig_invalid(*args, **kwargs):
+    (zone) = args
+    print("Invalid DNSSEC fo zone=%s" % (zone))
 
 if __name__ == '__main__':
     signal.signal(signal.SIGINT, sigint_handler)
 
     loop = dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+
     bus = dbus.SystemBus()
-    knotd = bus.get_object('cz.nic.knotd', '/cz/nic/knotd', introspect=False)
+    while True: # Wait until the service (knotd) is ready.
+        try:
+            knotd = bus.get_object('cz.nic.knotd', '/cz/nic/knotd',
+                                   follow_name_owner_changes=True,
+                                   introspect=False)
+            break
+        except:
+            time.sleep(0.1)
     events_iface = dbus.Interface(knotd, dbus_interface='cz.nic.knotd.events')
-    events_iface.connect_to_signal("zone_updated", updated)
+    events_iface.connect_to_signal("started", sig_started)
+    events_iface.connect_to_signal("stopped", sig_stopped)
+    events_iface.connect_to_signal("zone_updated", sig_updated)
+    events_iface.connect_to_signal("zone_ksk_submission", sig_submission)
+    events_iface.connect_to_signal("zone_dnssec_invalid", sig_invalid)
+
     loop = GLib.MainLoop()
     loop.run()