diff --git a/platform/esb/dev/irq.c b/platform/esb/dev/irq.c
index 4babd2edc..d9efdd084 100644
--- a/platform/esb/dev/irq.c
+++ b/platform/esb/dev/irq.c
@@ -33,6 +33,7 @@
 #include "lib/sensors.h"
 #include "dev/irq.h"
 #include "dev/lpm.h"
+#include <io.h>
 #include <signal.h>
 
 #define ADC12MCTL_NO(adcno) ((unsigned char *) ADC12MCTL0_)[adcno]
diff --git a/platform/esb/dev/radio-sensor.c b/platform/esb/dev/radio-sensor.c
index 898a2ea30..b13c7b345 100644
--- a/platform/esb/dev/radio-sensor.c
+++ b/platform/esb/dev/radio-sensor.c
@@ -34,6 +34,7 @@
 #include "dev/radio-sensor.h"
 #include "dev/irq.h"
 #include "dev/tr1001.h"
+#include <io.h>
 
 const struct sensors_sensor radio_sensor;
 
diff --git a/platform/esb/dev/sound-sensor.c b/platform/esb/dev/sound-sensor.c
index 593c838ce..309f2d9cb 100644
--- a/platform/esb/dev/sound-sensor.c
+++ b/platform/esb/dev/sound-sensor.c
@@ -30,9 +30,10 @@
  *
  * @(#)$Id: sound-sensor.c,v 1.5 2010/02/08 00:00:45 nifi Exp $
  */
-#include <stdlib.h>
 #include "dev/sound-sensor.h"
 #include "dev/irq.h"
+#include <stdlib.h>
+#include <io.h>
 
 #define MIC_MIN_SENS 150
 #define SAMPLE 1