diff --git a/pages/12.home-automation/docs.md b/pages/12.home-automation/docs.md
index 2de46b4..690543d 100644
--- a/pages/12.home-automation/docs.md
+++ b/pages/12.home-automation/docs.md
@@ -45,20 +45,20 @@ Edit Task 1
 
 # Step 5. - Install Mosquitto on a Raspberry Pi
 ### First get the repository package signing key, import it into apt, and remove the key file again:
-```
+```bash
 wget http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key
 sudo apt-key add mosquitto-repo.gpg.key
 rm mosquitto-repo.gpg.key
 ```
 
 ### Then make the mosquitto repository available to apt:
-```
+```bash
 cd /etc/apt/sources.list.d/
 sudo wget http://repo.mosquitto.org/debian/mosquitto-stretch.list
 sudo apt-get update
 ```
 
 ### Now we can install the core packages (server & clients):
-```
+```bash
 sudo apt-get install mosquitto mosquitto-clients
 ```
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