diff --git a/start.sh b/start.sh
index 1bc187f..60aeea5 100755
--- a/start.sh
+++ b/start.sh
@@ -55,7 +55,9 @@ yq w -i /app/data/configs/homeserver.yaml 'password_providers[0].config.bind_pas
 yq w -i /app/data/configs/homeserver.yaml 'password_providers[0].config.filter' "(objectClass=user)"
 
 # turn (https://github.com/matrix-org/synapse/blob/master/docs/turn-howto.md#synapse-setup)
-yq w -i /app/data/configs/homeserver.yaml turn_uris "[\"turn:${CLOUDRON_TURN_SERVER}:${CLOUDRON_TURN_TLS_PORT}?transport=udp\", \"turn:${CLOUDRON_TURN_SERVER}:${CLOUDRON_TURN_TLS_PORT}?transport=tcp\"]"
+yq w -i /app/data/configs/homeserver.yaml turn_uris "[]"
+yq w -i /app/data/configs/homeserver.yaml turn_uris\[0\] "turn:${CLOUDRON_TURN_SERVER}:${CLOUDRON_TURN_TLS_PORT}?transport=udp"
+yq w -i /app/data/configs/homeserver.yaml turn_uris\[1\] "turn:${CLOUDRON_TURN_SERVER}:${CLOUDRON_TURN_TLS_PORT}?transport=tcp"
 yq w -i /app/data/configs/homeserver.yaml turn_shared_secret "${CLOUDRON_TURN_SECRET}"
 
 # fix permissions