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-rw-r--r--src/pc80/serial.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/pc80/serial.c b/src/pc80/serial.c
index b4d0542824..396a41914e 100644
--- a/src/pc80/serial.c
+++ b/src/pc80/serial.c
@@ -1,4 +1,5 @@
#include <lib.h> /* Prototypes */
+#include <arch/io.h>
/* Base Address */
#ifndef CONFIG_TTYS0_BASE