Index: uspace/lib/libc/generic/ipc.c
===================================================================
--- uspace/lib/libc/generic/ipc.c	(revision e55b015fcf179637241cead9c008e8c3638c54be)
+++ uspace/lib/libc/generic/ipc.c	(revision 6c2f4e91bddcbc7dbc2f8dbb792b7f67d69b2f0f)
@@ -804,5 +804,5 @@
 int ipc_data_read_start(int phoneid, void *dst, size_t size)
 {
-	return ipc_call_sync_2_0(phoneid, IPC_M_DATA_READ, (ipcarg_t) dst,
+	return async_req_2_0(phoneid, IPC_M_DATA_READ, (ipcarg_t) dst,
 	    (ipcarg_t) size);
 }
@@ -863,5 +863,5 @@
 int ipc_data_write_start(int phoneid, void *src, size_t size)
 {
-	return ipc_call_sync_2_0(phoneid, IPC_M_DATA_WRITE, (ipcarg_t) src,
+	return async_req_2_0(phoneid, IPC_M_DATA_WRITE, (ipcarg_t) src,
 	    (ipcarg_t) size);
 }