diff --git a/platform/avr-rss2/contiki-conf.h b/platform/avr-rss2/contiki-conf.h
index 2d3ee1031..8b365671a 100644
--- a/platform/avr-rss2/contiki-conf.h
+++ b/platform/avr-rss2/contiki-conf.h
@@ -274,7 +274,7 @@ typedef unsigned short uip_stats_t;
 #define NBR_TABLE_CONF_MAX_NEIGHBORS      20
 #define UIP_CONF_DS6_DEFRT_NBU    2
 #define UIP_CONF_DS6_PREFIX_NBU   3
-#define UIP_CONF_MAX_ROUTES    4
+#define UIP_CONF_MAX_ROUTES       20
 #define UIP_CONF_DS6_ADDR_NBU     3
 #define UIP_CONF_DS6_MADDR_NBU    0
 #define UIP_CONF_DS6_AADDR_NBU    0