Index: uspace/lib/c/generic/task_event.c
===================================================================
--- uspace/lib/c/generic/task_event.c	(revision 012dd8ef3ba6b88a27a8406f1cb055389e6363f1)
+++ uspace/lib/c/generic/task_event.c	(revision ff20afc254a972d459b19912fcc810d00dcb8b6b)
@@ -83,5 +83,5 @@
  * Blocks, calls handler in another fibril
  */
-int task_register_event_handler(task_event_handler_t handler)
+int task_register_event_handler(task_event_handler_t handler, bool past_events)
 {
 	/*
@@ -95,5 +95,5 @@
 
 	async_exch_t *exch = taskman_exchange_begin();
-	aid_t req = async_send_0(exch, TASKMAN_EVENT_CALLBACK, NULL);
+	aid_t req = async_send_1(exch, TASKMAN_EVENT_CALLBACK, past_events, NULL);
 
 	int rc = async_connect_to_me(exch, 0, 0, 0, taskman_event_conn, NULL);