diff --git a/src/superio/fintek/f81803a/superio.c b/src/superio/fintek/f81803a/superio.c
index 1cb31bfa9b..5a54f54f52 100644
--- a/src/superio/fintek/f81803a/superio.c
+++ b/src/superio/fintek/f81803a/superio.c
@@ -17,7 +17,6 @@
 #include <device/device.h>
 #include <device/pnp.h>
 #include <superio/conf_mode.h>
-#include <stdlib.h>
 #include <pc80/keyboard.h>
 #include "f81803a.h"
 
diff --git a/src/superio/nuvoton/nct5539d/superio.c b/src/superio/nuvoton/nct5539d/superio.c
index 45187ac74b..04461b3abe 100644
--- a/src/superio/nuvoton/nct5539d/superio.c
+++ b/src/superio/nuvoton/nct5539d/superio.c
@@ -22,7 +22,6 @@
 #include <device/device.h>
 #include <device/pnp.h>
 #include <pc80/keyboard.h>
-#include <stdlib.h>
 #include <superio/conf_mode.h>
 #include "nct5539d.h"