Index: uspace/app/tetris/screen.c
===================================================================
--- uspace/app/tetris/screen.c	(revision b74959bd4f5b3c25215165e16f18a594cc56d741)
+++ uspace/app/tetris/screen.c	(revision d4e38c74100f1742565d55a85aba5978176a3fa4)
@@ -96,6 +96,6 @@
 void clear_screen(void)
 {
-	async_msg(con_phone, CONSOLE_CLEAR, 0);
-	moveto(0,0);
+	async_msg_0(con_phone, CONSOLE_CLEAR);
+	moveto(0, 0);
 }
 
@@ -108,5 +108,5 @@
 
 	resume_normal();
-	async_msg(con_phone, CONSOLE_CLEAR, 0);
+	async_msg_0(con_phone, CONSOLE_CLEAR);
 	curscore = -1;
 	memset((char *)curscreen, 0, sizeof(curscreen));
@@ -120,5 +120,5 @@
 {
 	con_phone = get_fd_phone(1);
-	async_msg(con_phone, CONSOLE_CURSOR_VISIBILITY, 0);
+	async_msg_1(con_phone, CONSOLE_CURSOR_VISIBILITY, 0);
 	resume_normal();
 	scr_clear();
@@ -132,5 +132,5 @@
 static void fflush(void)
 {
-	async_msg(con_phone, CONSOLE_FLUSH, 0);
+	async_msg_0(con_phone, CONSOLE_FLUSH);
 }
 
@@ -139,5 +139,6 @@
 static int get_display_size(winsize_t *ws)
 {
-	return async_req_2(con_phone, CONSOLE_GETSIZE, 0, 0, &ws->ws_row, &ws->ws_col);
+	return async_req_0_2(con_phone, CONSOLE_GETSIZE, &ws->ws_row,
+	    &ws->ws_col);
 }