diff --git a/tools/sky/uip6-bridge/bridge-conf.h b/tools/sky/uip6-bridge/bridge-conf.h
index d96d8af48..fe96d5417 100644
--- a/tools/sky/uip6-bridge/bridge-conf.h
+++ b/tools/sky/uip6-bridge/bridge-conf.h
@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: bridge-conf.h,v 1.5 2010/01/28 13:49:24 adamdunkels Exp $
+ * $Id: bridge-conf.h,v 1.6 2010/02/03 16:48:54 adamdunkels Exp $
  */
 
 /**
@@ -53,7 +53,7 @@
 #undef RF_CHANNEL
 #define RF_CHANNEL              26
 
-#define CC2420_CONF_AUTOACK     1
+#define CC2420_CONF_AUTOACK     0
 
 #undef UIP_CONF_BUFFER_SIZE
 #define UIP_CONF_BUFFER_SIZE  256