diff --git a/index.html b/index.html
index 31baaef..2017e25 100644
--- a/index.html
+++ b/index.html
@@ -26,7 +26,8 @@ title: Arduino Client for MQTT
             <li>Arduino Ethernet Shield</li>
             <li>Arduino YUN – use the included <code>YunClient</code> in place of <code>EthernetClient</code>, and
                 be sure to do a <code>Bridge.begin()</code> first</li>
-            <li>Arduino WiFi Shield</li>
+            <li>Arduino WiFi Shield - if you want to send packets > 90 bytes with this shield,
+   enable the [`MQTT_MAX_TRANSFER_SIZE`](http://knolleary.github.io/pubsubclient/api.html#configoptions) define in `PubSubClient.h`.</li>
             <li>Sparkfun WiFly Shield – when used with <a href="https://github.com/dpslwk/WiFly">this library</a></li>
             <li>Intel Galileo/Edison</li>
             <li>ESP8266</li>