diff --git a/docs/index.md b/docs/index.md
index 023b015..cf546e6 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -67,6 +67,14 @@ $ apt update
 $ apt upgrade
 ```
 
+This step may be not needed but it has been reported a few times. You need to
+unblock the Wifi device. In order to do this, you'll need to run the following.
+
+```bash
+$ apt install -y rfkill
+$ rfkill unblock wlan
+```
+
 We should then perform a number of steps within the [raspi-config] tool:
 
 ```bash