diff --git a/libnm/nm-client.c b/libnm/nm-client.c
index 9af5eaf06..f727e8201 100644
--- a/libnm/nm-client.c
+++ b/libnm/nm-client.c
@@ -792,26 +792,6 @@ nm_client_check_connectivity (NMClient *client,
 	return connectivity;
 }
 
-static void
-check_connectivity_cb (GObject *object,
-                       GAsyncResult *result,
-                       gpointer user_data)
-{
-	GSimpleAsyncResult *simple = user_data;
-	NMConnectivityState connectivity;
-	GError *error = NULL;
-
-	connectivity = nm_manager_check_connectivity_finish (NM_MANAGER (object),
-	                                                     result, &error);
-	if (!error)
-		g_simple_async_result_set_op_res_gssize (simple, connectivity);
-	else
-		g_simple_async_result_take_error (simple, error);
-
-	g_simple_async_result_complete (simple);
-	g_object_unref (simple);
-}
-
 /**
  * nm_client_check_connectivity_async:
  * @client: an #NMClient
@@ -830,22 +810,22 @@ nm_client_check_connectivity_async (NMClient *client,
                                     GAsyncReadyCallback callback,
                                     gpointer user_data)
 {
-	GSimpleAsyncResult *simple;
-	GError *error = NULL;
-
 	g_return_if_fail (NM_IS_CLIENT (client));
+	g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
 
-	if (!_nm_client_check_nm_running (client, &error)) {
-		g_simple_async_report_take_gerror_in_idle (G_OBJECT (client), callback, user_data, error);
-		return;
-	}
-
-	simple = g_simple_async_result_new (G_OBJECT (client), callback, user_data,
-	                                    nm_client_check_connectivity_async);
-	if (cancellable)
-		g_simple_async_result_set_check_cancellable (simple, cancellable);
-	nm_manager_check_connectivity_async (NM_CLIENT_GET_PRIVATE (client)->manager,
-	                                     cancellable, check_connectivity_cb, simple);
+	_nm_object_dbus_call (client,
+	                      nm_client_check_connectivity_async,
+	                      cancellable,
+	                      callback,
+	                      user_data,
+	                      NM_DBUS_PATH,
+	                      NM_DBUS_INTERFACE,
+	                      "CheckConnectivity",
+	                      g_variant_new ("()"),
+	                      G_VARIANT_TYPE ("(u)"),
+	                      G_DBUS_CALL_FLAGS_NONE,
+	                      NM_DBUS_DEFAULT_TIMEOUT_MSEC,
+	                      nm_dbus_connection_call_finish_variant_strip_dbus_error_cb);
 }
 
 /**
@@ -864,16 +844,20 @@ nm_client_check_connectivity_finish (NMClient *client,
                                      GAsyncResult *result,
                                      GError **error)
 {
-	GSimpleAsyncResult *simple;
+	gs_unref_variant GVariant *ret = NULL;
+	guint32 connectivity;
 
 	g_return_val_if_fail (NM_IS_CLIENT (client), NM_CONNECTIVITY_UNKNOWN);
-	g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (result), NM_CONNECTIVITY_UNKNOWN);
+	g_return_val_if_fail (nm_g_task_is_valid (client, result, nm_client_check_connectivity_async), NM_CONNECTIVITY_UNKNOWN);
 
-	simple = G_SIMPLE_ASYNC_RESULT (result);
-
-	if (g_simple_async_result_propagate_error (simple, error))
+	ret = g_task_propagate_pointer (G_TASK (result), error);
+	if (!ret)
 		return NM_CONNECTIVITY_UNKNOWN;
-	return (NMConnectivityState) g_simple_async_result_get_op_res_gssize (simple);
+
+	g_variant_get (ret,
+	               "(u)",
+	               &connectivity);
+	return connectivity;
 }
 
 /**
diff --git a/libnm/nm-manager.c b/libnm/nm-manager.c
index 536047b6b..17e1f7c2f 100644
--- a/libnm/nm-manager.c
+++ b/libnm/nm-manager.c
@@ -641,74 +641,6 @@ _nm_manager_set_connectivity_hack (NMManager *manager,
 	}
 }
 
-static void
-check_connectivity_cb (GObject *object,
-                       GAsyncResult *result,
-                       gpointer user_data)
-{
-	GSimpleAsyncResult *simple = user_data;
-	guint32 connectivity;
-	GError *error = NULL;
-	NMManager *manager;
-	NMManagerPrivate *priv;
-
-	if (nmdbus_manager_call_check_connectivity_finish (NMDBUS_MANAGER (object),
-	                                                   &connectivity,
-	                                                   result, &error)) {
-		g_simple_async_result_set_op_res_gssize (simple, connectivity);
-
-		manager = NM_MANAGER (g_async_result_get_source_object (G_ASYNC_RESULT (simple)));
-		priv = NM_MANAGER_GET_PRIVATE (manager);
-		if (connectivity != priv->connectivity) {
-			priv->connectivity = connectivity;
-			g_object_notify (G_OBJECT (manager), NM_MANAGER_CONNECTIVITY);
-		}
-	} else {
-		g_dbus_error_strip_remote_error (error);
-		g_simple_async_result_take_error (simple, error);
-	}
-
-	g_simple_async_result_complete (simple);
-	g_object_unref (simple);
-}
-
-void
-nm_manager_check_connectivity_async (NMManager *manager,
-                                     GCancellable *cancellable,
-                                     GAsyncReadyCallback callback,
-                                     gpointer user_data)
-{
-	NMManagerPrivate *priv;
-	GSimpleAsyncResult *simple;
-
-	g_return_if_fail (NM_IS_MANAGER (manager));
-	priv = NM_MANAGER_GET_PRIVATE (manager);
-
-	simple = g_simple_async_result_new (G_OBJECT (manager), callback, user_data,
-	                                    nm_manager_check_connectivity_async);
-	if (cancellable)
-		g_simple_async_result_set_check_cancellable (simple, cancellable);
-	nmdbus_manager_call_check_connectivity (priv->proxy,
-	                                        cancellable,
-	                                        check_connectivity_cb, simple);
-}
-
-NMConnectivityState
-nm_manager_check_connectivity_finish (NMManager *manager,
-                                      GAsyncResult *result,
-                                      GError **error)
-{
-	GSimpleAsyncResult *simple;
-
-	g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (manager), nm_manager_check_connectivity_async), NM_CONNECTIVITY_UNKNOWN);
-
-	simple = G_SIMPLE_ASYNC_RESULT (result);
-
-	if (g_simple_async_result_propagate_error (simple, error))
-		return NM_CONNECTIVITY_UNKNOWN;
-	return (NMConnectivityState) g_simple_async_result_get_op_res_gssize (simple);
-}
-
 /*****************************************************************************/
 /* Devices                                                      */
 /*****************************************************************************/
diff --git a/libnm/nm-manager.h b/libnm/nm-manager.h
index 86dd4c3cd..30e8ad2e0 100644
--- a/libnm/nm-manager.h
+++ b/libnm/nm-manager.h
@@ -121,14 +121,6 @@ NMConnectivityState nm_manager_get_connectivity          (NMManager *manager);
 void _nm_manager_set_connectivity_hack (NMManager *manager,
                                         guint32 connectivity);
 
-void                nm_manager_check_connectivity_async  (NMManager *manager,
-                                                          GCancellable *cancellable,
-                                                          GAsyncReadyCallback callback,
-                                                          gpointer user_data);
-NMConnectivityState nm_manager_check_connectivity_finish (NMManager *manager,
-                                                          GAsyncResult *result,
-                                                          GError **error);
-
 /* Devices */
 
 const GPtrArray *nm_manager_get_devices    (NMManager *manager);