diff --git a/source/_components/light.decora.markdown b/source/_components/light.decora.markdown
index d40acae2bac..349172fd0f8 100644
--- a/source/_components/light.decora.markdown
+++ b/source/_components/light.decora.markdown
@@ -34,3 +34,23 @@ Configuration variables:
   - **[mac address]** (*Required*): The bluetooth address of the switch.
     - **name** (*Optional*): The custom name to use in the frontend.
     - **api_key** (*Required*): The API key to acces the device.
+
+<p class='note'>
+If you get an error looking like this:
+
+```bash
+Jun 20 19:41:18 androlapin hass[29588]: ERROR:homeassistant.components.light:Error while setting up platform decora
+[...]
+Jun 20 19:41:18 androlapin hass[29588]:   File "/usr/lib/python3.6/concurrent/futures/thread.py", line 55, in run
+Jun 20 19:41:18 androlapin hass[29588]:     result = self.fn(*self.args, **self.kwargs)
+Jun 20 19:41:18 androlapin hass[29588]:   File "/opt/homeassistant/custom_components/light/decora.py", line 68, in setup_platform
+Jun 20 19:41:18 androlapin hass[29588]:     light = DecoraLight(device)
+[...]
+Jun 20 19:41:18 androlapin hass[29588]: OSError: [Errno 8] Exec format error
+```
+
+1. Go to your `.homeassistant` folder
+2. Then go to `deps/bluepy` subfolder.
+3. Then run `make all`
+4. Restart home assistant
+</p>