diff --git a/platform/sky/contiki-conf.h b/platform/sky/contiki-conf.h
index b6e176c7c..df4d68ce5 100644
--- a/platform/sky/contiki-conf.h
+++ b/platform/sky/contiki-conf.h
@@ -1,5 +1,5 @@
 /* -*- C -*- */
-/* @(#)$Id: contiki-conf.h,v 1.56 2009/06/26 12:01:23 joxe Exp $ */
+/* @(#)$Id: contiki-conf.h,v 1.57 2009/06/29 09:54:39 nifi Exp $ */
 
 #ifndef CONTIKI_CONF_H
 #define CONTIKI_CONF_H
@@ -83,7 +83,9 @@
 #define UIP_CONF_LL_802154              1
 #define UIP_CONF_LLH_LEN                0
 
+#ifndef UIP_CONF_ROUTER
 #define UIP_CONF_ROUTER			0
+#endif
 
 #define UIP_CONF_IPV6                   1
 #define UIP_CONF_IPV6_QUEUE_PKT         1