diff --git a/platform/z1/contiki-z1-main.c b/platform/z1/contiki-z1-main.c
index 1afa8cdc2..61bc5d0af 100644
--- a/platform/z1/contiki-z1-main.c
+++ b/platform/z1/contiki-z1-main.c
@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * @(#)$Id: contiki-z1-main.c,v 1.2 2010/08/26 09:16:39 joxe Exp $
+ * @(#)$Id: contiki-z1-main.c,v 1.3 2010/08/26 16:01:20 joxe Exp $
  */
 
 #include <signal.h>
@@ -48,6 +48,7 @@
 #include "lib/random.h"
 #include "net/netstack.h"
 #include "net/mac/frame802154.h"
+#include "dev/button-sensor.h"
 
 #if WITH_UIP6
 #include "net/uip-ds6.h"
@@ -250,8 +251,7 @@ main(int argc, char **argv)
   process_init();
   process_start(&etimer_process, NULL);
 
-  //process_start(&sensors_process, NULL);
-  PRINTF("process_sensors() skipped \n");
+  process_start(&sensors_process, NULL);
 
   ctimer_init();
 
diff --git a/platform/z1/dev/button-sensor.c b/platform/z1/dev/button-sensor.c
index 4aefb9841..f6f90adc1 100644
--- a/platform/z1/dev/button-sensor.c
+++ b/platform/z1/dev/button-sensor.c
@@ -28,7 +28,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * @(#)$Id: button-sensor.c,v 1.1 2010/08/24 16:26:38 joxe Exp $
+ * @(#)$Id: button-sensor.c,v 1.2 2010/08/26 16:01:20 joxe Exp $
  */
 #include "lib/sensors.h"
 #include "dev/hwconf.h"
@@ -40,8 +40,8 @@ const struct sensors_sensor button_sensor;
 static struct timer debouncetimer;
 static int status(int type);
 
-HWCONF_PIN(BUTTON, 2, 7);
-HWCONF_IRQ(BUTTON, 2, 7);
+HWCONF_PIN(BUTTON, 2, 5);
+HWCONF_IRQ(BUTTON, 2, 5);
 
 /*---------------------------------------------------------------------------*/
 interrupt(PORT2_VECTOR)