diff --git a/examples/mqtt_arbitrary_buffer/README.md b/examples/mqtt_arbitrary_buffer/README.md
index 4915b34..e6be1b2 100644
--- a/examples/mqtt_arbitrary_buffer/README.md
+++ b/examples/mqtt_arbitrary_buffer/README.md
@@ -4,12 +4,12 @@ This example illustrates Publish an arbitrary data packet using the Adafruit MQT
 
 
 ## Installing and running Mosquitto
-###On a Raspberry Pi:
+####On a Raspberry Pi:
 ```bash
 sudo apt-get install mosquitto
 ```
 
-###On a Mac:
+####On a Mac:
 ```bash
 brew install mosquitto
 ```