diff --git a/src/mainboard/iei/kino-780am2-fam10/romstage.c b/src/mainboard/iei/kino-780am2-fam10/romstage.c
index e5e2c577a3..299ba619a5 100644
--- a/src/mainboard/iei/kino-780am2-fam10/romstage.c
+++ b/src/mainboard/iei/kino-780am2-fam10/romstage.c
@@ -41,7 +41,7 @@
 #include "northbridge/amd/amdfam10/reset_test.c"
 #include <console/loglevel.h>
 #include "cpu/x86/bist.h"
-#include "superio/fintek/f71859/early_serial.c"
+#include <superio/fintek/f71859/f71859.h>
 #include <cpu/amd/mtrr.h>
 #include "northbridge/amd/amdfam10/setup_resource_map.c"
 #include "southbridge/amd/rs780/early_setup.c"
diff --git a/src/superio/fintek/f71859/Makefile.inc b/src/superio/fintek/f71859/Makefile.inc
index bf150daa9a..885881163e 100644
--- a/src/superio/fintek/f71859/Makefile.inc
+++ b/src/superio/fintek/f71859/Makefile.inc
@@ -18,5 +18,5 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 ##
 
+romstage-$(CONFIG_SUPERIO_FINTEK_F71859) += early_serial.c
 ramstage-$(CONFIG_SUPERIO_FINTEK_F71859) += superio.c
-
diff --git a/src/superio/fintek/f71859/early_serial.c b/src/superio/fintek/f71859/early_serial.c
index 4401714b98..cb0d3dec02 100644
--- a/src/superio/fintek/f71859/early_serial.c
+++ b/src/superio/fintek/f71859/early_serial.c
@@ -21,6 +21,7 @@
 /* Pre-RAM driver for the Fintek F71859 Super I/O chip. */
 
 #include <arch/io.h>
+#include <device/pnp.h>
 #include "f71859.h"
 
 static void pnp_enter_conf_state(device_t dev)
@@ -36,7 +37,7 @@ static void pnp_exit_conf_state(device_t dev)
 	outb(0xaa, port);
 }
 
-static void f71859_enable_serial(device_t dev, u16 iobase)
+void f71859_enable_serial(device_t dev, u16 iobase)
 {
 	pnp_enter_conf_state(dev);
 	pnp_set_logical_device(dev);
diff --git a/src/superio/fintek/f71859/f71859.h b/src/superio/fintek/f71859/f71859.h
index 2c89d19e7a..580fa34e9d 100644
--- a/src/superio/fintek/f71859/f71859.h
+++ b/src/superio/fintek/f71859/f71859.h
@@ -24,4 +24,6 @@
 /* Logical Device Numbers (LDN). */
 #define F71859_SP1	0x03	/* UART1 */
 
-#endif
+void f71859_enable_serial(device_t dev, u16 iobase);
+
+#endif /* SUPERIO_FINTEK_F71859_F71859_H */