diff --git a/part14-spi-ethernet/README.md b/part14-spi-ethernet/README.md
index 40ed7e2..d5ce215 100644
--- a/part14-spi-ethernet/README.md
+++ b/part14-spi-ethernet/README.md
@@ -205,3 +205,5 @@ arp_test();
 _Imagine how happy I was to see my router's (correct!) MAC address appear on-screen - a sign of life, and proof that my OS is actually networking!_
 
 ![ARP response](images/14-spi-ethernet-arp.jpg)
+
+[Go to part15-tcpip >](../part15-tcpip)