Index: kernel/genarch/src/drivers/grlib/uart.c
===================================================================
--- kernel/genarch/src/drivers/grlib/uart.c	(revision 208b5f542c8db6c9ce6844cd62a6794e94185293)
+++ kernel/genarch/src/drivers/grlib/uart.c	(revision 83b01c20c6b1089ca58ebbbee8f4d709257d1db7)
@@ -100,5 +100,7 @@
 static outdev_operations_t grlib_uart_ops = {
 	.write = grlib_uart_putchar,
-	.redraw = NULL
+	.redraw = NULL,
+	.scroll_up = NULL,
+	.scroll_down = NULL
 };