diff --git a/roles/nodered/README.rst b/roles/nodered/README.rst
index bee703c6b..8eb18990e 100644
--- a/roles/nodered/README.rst
+++ b/roles/nodered/README.rst
@@ -24,6 +24,11 @@ You can monitor the Node-RED service with command::
 
   systemctl status node-red
 
+Raspberry Pi Zero W Warning
+---------------------------
+
+Node.js applications like Asterisk/FreePBX, Node-RED and Sugarizer `won't work <https://nodered.org/docs/hardware/raspberrypi#swapping-sd-cards>`_ on Raspberry Pi Zero W (ARM6) if you installed Node.js while on RPi 3 or 3 B+ (ARM7).  If absolutely necessary, run "./runrole nodejs" from the Pi Zero W itself, before proceeding to install Sugarizer, Node-RED and/or Asterisk/FreePBX.
+
 See Also
 --------