diff --git a/drivers/input/serio/altera_ps2.c b/drivers/input/serio/altera_ps2.c
index cce69d6b9587..e0371e182a2a 100644
--- a/drivers/input/serio/altera_ps2.c
+++ b/drivers/input/serio/altera_ps2.c
@@ -74,7 +74,7 @@ static void altera_ps2_close(struct serio *io)
 {
 	struct ps2if *ps2if = io->port_data;
 
-	writel(0, ps2if->base); /* disable rx irq */
+	writel(0, ps2if->base + 4); /* disable rx irq */
 }
 
 /*