diff --git a/drivers/spi/kirkwood_spi.c b/drivers/spi/kirkwood_spi.c
index a1c3070..6f502f0 100644
--- a/drivers/spi/kirkwood_spi.c
+++ b/drivers/spi/kirkwood_spi.c
@@ -27,6 +27,7 @@
 #include <common.h>
 #include <malloc.h>
 #include <spi.h>
+#include <asm/io.h>
 #include <asm/arch/kirkwood.h>
 #include <asm/arch/spi.h>
 #include <asm/arch/mpp.h>