Index: uspace/lib/c/include/async.h
===================================================================
--- uspace/lib/c/include/async.h	(revision 42a619b240617c4f0e4dd04ddf2366f3c5a0709a)
+++ uspace/lib/c/include/async.h	(revision 36b16bc4049fcc40e8ec4b5d1fcbcf9f46a96553)
@@ -176,5 +176,5 @@
 extern int async_wait_timeout(aid_t, sysarg_t *, suseconds_t);
 
-extern fid_t async_new_connection(sysarg_t, sysarg_t, ipc_callid_t,
+extern fid_t async_new_connection(task_id_t, sysarg_t, ipc_callid_t,
     ipc_call_t *, async_client_conn_t, void *);
 
@@ -186,6 +186,6 @@
 extern void async_set_client_data_destructor(async_client_data_dtor_t);
 extern void *async_get_client_data(void);
-extern void *async_get_client_data_by_hash(sysarg_t);
-extern void async_put_client_data_by_hash(sysarg_t);
+extern void *async_get_client_data_by_id(task_id_t);
+extern void async_put_client_data_by_id(task_id_t);
 
 extern void async_set_client_connection(async_client_conn_t);
Index: uspace/lib/c/include/ipc/common.h
===================================================================
--- uspace/lib/c/include/ipc/common.h	(revision 42a619b240617c4f0e4dd04ddf2366f3c5a0709a)
+++ uspace/lib/c/include/ipc/common.h	(revision 36b16bc4049fcc40e8ec4b5d1fcbcf9f46a96553)
@@ -39,4 +39,5 @@
 #include <abi/ipc/ipc.h>
 #include <atomic.h>
+#include <task.h>
 
 #define IPC_FLAG_BLOCKING  0x01
@@ -44,5 +45,5 @@
 typedef struct {
 	sysarg_t args[IPC_CALL_LEN];
-	sysarg_t in_task_hash;
+	task_id_t in_task_id;
 	sysarg_t in_phone_hash;
 } ipc_call_t;