diff --git a/docs/turn-howto.rst b/docs/turn-howto.rst
index 82b59538c..e2c73458e 100644
--- a/docs/turn-howto.rst
+++ b/docs/turn-howto.rst
@@ -81,7 +81,7 @@ Your home server configuration file needs the following extra keys:
 As an example, here is the relevant section of the config file for
 matrix.org::
 
-    turn_uris: turn:turn.matrix.org:3478?transport=udp,turn:turn.matrix.org:3478?transport=tcp
+    turn_uris: [ "turn:turn.matrix.org:3478?transport=udp", "turn:turn.matrix.org:3478?transport=tcp" ]
     turn_shared_secret: n0t4ctuAllymatr1Xd0TorgSshar3d5ecret4obvIousreAsons
     turn_user_lifetime: 86400000