diff --git a/docker/api/func.js b/docker/api/func.js
index 60b54b50001ee999df2c2bd5a17fd918f3232594..0292a2905e0028c9df274b46cd48995eee2256ee 100755
--- a/docker/api/func.js
+++ b/docker/api/func.js
@@ -191,9 +191,13 @@ exports.do_webhook = async( id, url, value, html, link, data ) =>
         const json = JSON.stringify( { id, url, value, html, link, data } );
 
         try {
+            const isJSON = (process.env.WEBHOOK_FORMAT && process.env.WEBHOOK_FORMAT.toLowerCase() == 'json')
             const response = await fetch( process.env.WEBHOOK_URL , {
                 method: 'POST', 
-                body: (process.env.WEBHOOK_FORMAT && process.env.WEBHOOK_FORMAT.toLowerCase() == 'json') ? json : form
+                headers: {
+                    'Content-Type': isJSON? 'application/json' : 'application/x-www-form-urlencoded'               
+                },
+                body: isJSON ? json : form
             } );
     
             const ret = await response.text();