diff --git a/examples/rime/example-collect.c b/examples/rime/example-collect.c
index c5cab544d..7a33dbc37 100644
--- a/examples/rime/example-collect.c
+++ b/examples/rime/example-collect.c
@@ -28,7 +28,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: example-collect.c,v 1.9 2009/10/18 17:52:08 adamdunkels Exp $
+ * $Id: example-collect.c,v 1.10 2010/02/03 21:11:33 adamdunkels Exp $
  */
 
 /**
@@ -71,11 +71,12 @@ PROCESS_THREAD(example_collect_process, ev, data)
 {
   PROCESS_BEGIN();
 
+  SENSORS_ACTIVATE(button_sensor);
+  
   collect_open(&tc, 130, &callbacks);
 
   while(1) {
     static struct etimer et;
-    uint16_t tmp;
 
     /* Send a packet every 16 seconds; first wait 8 seconds, than a
        random time between 0 and 8 seconds. */