diff --git a/net/nginx/files-luci-support/60_nginx-luci-support b/net/nginx/files-luci-support/60_nginx-luci-support
index 700ef797d..1a4f558d4 100644
--- a/net/nginx/files-luci-support/60_nginx-luci-support
+++ b/net/nginx/files-luci-support/60_nginx-luci-support
@@ -12,9 +12,9 @@ location /ubus {
 
 location ~ ^/ttyd(.*)$ {
     proxy_http_version 1.1;
-    proxy_set_header Upgrade '$http_upgrade';
+    proxy_set_header Upgrade \$http_upgrade;
     proxy_set_header Connection "upgrade";
-    proxy_pass http://'$server_addr':7681/'$1';
+    proxy_pass http://\$server_addr:7681/\$1;
 }
 
 EOT