added include uip.h
diff --git a/contiki/uip/uip-fw.h b/contiki/uip/uip-fw.h
index ee1c37b..915be94 100644
--- a/contiki/uip/uip-fw.h
+++ b/contiki/uip/uip-fw.h
@@ -1,6 +1,8 @@
 #ifndef __UIP_FW_H__
 #define __UIP_FW_H__
 
+#include "uip.h"
+
 /**
  * Representation of a uIP network interface.
  */