diff --git a/examples/ipv6/native-border-router/project-conf.h b/examples/ipv6/native-border-router/project-conf.h
index 6258b4eca..90576783a 100644
--- a/examples/ipv6/native-border-router/project-conf.h
+++ b/examples/ipv6/native-border-router/project-conf.h
@@ -37,7 +37,7 @@
 #define QUEUEBUF_CONF_NUM         4
 
 #undef UIP_CONF_BUFFER_SIZE
-#define UIP_CONF_BUFFER_SIZE    140
+#define UIP_CONF_BUFFER_SIZE    1280
 
 #undef UIP_CONF_RECEIVE_WINDOW
 #define UIP_CONF_RECEIVE_WINDOW  60