diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index 78e82b017b92..d71143e4e9df 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -30,6 +30,7 @@
 #include <linux/serial.h>
 #include <linux/serial_core.h>
 #include <linux/serial_bcm63xx.h>
+#include <linux/io.h>
 
 #define BCM63XX_NR_UARTS	2