diff --git a/cfg/ngx/fw.op.fo.conf b/cfg/ngx/fw.op.fo.conf
index f0c397e..67544f6 100644
--- a/cfg/ngx/fw.op.fo.conf
+++ b/cfg/ngx/fw.op.fo.conf
@@ -84,7 +84,7 @@ server {
 
 #https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_set_body
 
-proxy_set_body {"p_shortcode": "ph25", "p_dbg": "true"};
+proxy_set_body '{"p_shortcode": "ph25", "p_dbg": "true"}';
 
 
         proxy_pass http://postgrest;