diff --git a/docs/index.rst b/docs/index.rst
index 8aaf2eb4..b84c8fd7 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -133,8 +133,8 @@ ar71xx-generic
 
 * AVM
 
-  - Fritz!Box 4020
-  - Fritz!WLAN Repeater 450E
+  - Fritz!Box 4020 [#avmflash]_
+  - Fritz!WLAN Repeater 450E [#avmflash]_
 
 * Buffalo
 
@@ -306,7 +306,7 @@ ipq40xx
 
 * AVM
 
-  - FRITZ!Box 4040 [#80211s]_
+  - FRITZ!Box 4040 [#80211s]_ [#avmflash]_
 
 * GL.iNet
 
@@ -426,6 +426,9 @@ Footnotes
   Device uses the ath10k WLAN driver; images are built for 11s by default unless GLUON_WLAN_MESH
   is set as described in :ref:`getting-started-make-variables`
 
+.. [#avmflash]
+  For an instruction on how to flash AVM devices, visit https://www.fritzfla.sh
+
 .. [#80211s]
   Device does not support IBSS; images are built by default unless GLUON_WLAN_MESH
   is explicitly set to something other than *11s*