diff --git a/source/hassio/installation.markdown b/source/hassio/installation.markdown
index 112653f51bd..8c90ce1f509 100644
--- a/source/hassio/installation.markdown
+++ b/source/hassio/installation.markdown
@@ -115,6 +115,10 @@ The packages you need to have available on your system that will run Hass.io may
  - socat
  - software-properties-common
 
+<p class='note warning'>
+   The `modemmanager` package will interfere with any Z-Wave or Zigbee stick and should be removed or disabled. Failure to do so will result in random failures of those components. For example you can disable with `sudo systemctl disable ModemManager` and remove with `sudo apt-get purge modemmanager`
+</p>
+
 ### {% linkable_title Arch Linux %}
 
  - apparmor