diff --git a/cpu/6502/6502def.h b/cpu/6502/6502def.h
index 6ff6c2ad2..1d7b5c440 100644
--- a/cpu/6502/6502def.h
+++ b/cpu/6502/6502def.h
@@ -69,6 +69,7 @@ typedef unsigned short uip_stats_t;
 #define UIP_ARCH_ADD32  1
 #define UIP_ARCH_CHKSUM 1
 
+#define UIP_CONF_LLH_LEN                      14
 #define RESOLV_CONF_SUPPORTS_MDNS              0
 #define RESOLV_CONF_SUPPORTS_RECORD_EXPIRATION 0
 #define NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE   1
diff --git a/platform/minimal-net/contiki-conf.h b/platform/minimal-net/contiki-conf.h
index 3fb85b001..be000340e 100644
--- a/platform/minimal-net/contiki-conf.h
+++ b/platform/minimal-net/contiki-conf.h
@@ -140,6 +140,7 @@ typedef unsigned short uip_stats_t;
 
 #endif
 
+#define UIP_CONF_LLH_LEN              14
 #define UIP_CONF_MAX_LISTENPORTS      40
 #define UIP_CONF_MAX_CONNECTIONS      40
 #define UIP_CONF_BYTE_ORDER           UIP_LITTLE_ENDIAN
diff --git a/platform/win32/contiki-conf.h b/platform/win32/contiki-conf.h
index 11e80ab49..3a545f81e 100644
--- a/platform/win32/contiki-conf.h
+++ b/platform/win32/contiki-conf.h
@@ -56,25 +56,26 @@ typedef          long  s32_t;
 
 typedef unsigned short uip_stats_t;
 
-#define UIP_CONF_MAX_CONNECTIONS 40
-#define UIP_CONF_MAX_LISTENPORTS 40
-#define UIP_CONF_BUFFER_SIZE     1514
-#define UIP_CONF_BYTE_ORDER      UIP_LITTLE_ENDIAN
-#define UIP_CONF_TCP_SPLIT       1
+#define UIP_CONF_MAX_CONNECTIONS     40
+#define UIP_CONF_MAX_LISTENPORTS     40
+#define UIP_CONF_LLH_LEN             14
+#define UIP_CONF_BUFFER_SIZE         1514
+#define UIP_CONF_BYTE_ORDER          UIP_LITTLE_ENDIAN
+#define UIP_CONF_TCP_SPLIT           1
+#define UIP_CONF_LOGGING             1
+#define UIP_CONF_UDP_CHECKSUMS       1
 #if UIP_CONF_IPV6
-#define UIP_CONF_IP_FORWARD      0
-#define NBR_TABLE_CONF_MAX_NEIGHBORS     100
-#define UIP_CONF_DS6_DEFRT_NBU   2
-#define UIP_CONF_DS6_PREFIX_NBU  5
-#define UIP_CONF_MAX_ROUTES   100
-#define UIP_CONF_DS6_ADDR_NBU    10
-#define UIP_CONF_DS6_MADDR_NBU   0  //VC++ does not allow zero length arrays
-#define UIP_CONF_DS6_AADDR_NBU   0  //inside a struct
+#define UIP_CONF_IP_FORWARD          0
+#define NBR_TABLE_CONF_MAX_NEIGHBORS 100
+#define UIP_CONF_DS6_DEFRT_NBU       2
+#define UIP_CONF_DS6_PREFIX_NBU      5
+#define UIP_CONF_MAX_ROUTES          100
+#define UIP_CONF_DS6_ADDR_NBU        10
+#define UIP_CONF_DS6_MADDR_NBU       0  //VC++ does not allow zero length arrays
+#define UIP_CONF_DS6_AADDR_NBU       0  //inside a struct
 #else
-#define UIP_CONF_IP_FORWARD      1
+#define UIP_CONF_IP_FORWARD          1
 #endif
-#define UIP_CONF_LOGGING         1
-#define UIP_CONF_UDP_CHECKSUMS   1
 
 
 #include <ctype.h>