diff --git a/validate/device.schema.js b/validate/device.schema.js
index c054b02..c7182cb 100644
--- a/validate/device.schema.js
+++ b/validate/device.schema.js
@@ -15,7 +15,8 @@ const insertDeviceSchema = Joi.object({
         .required()
         .messages({
             'string.ip': 'IP address must be a valid IPv4 or IPv6 address'
-        })
+        }),
+    listen_channel: Joi.string().max(100).required()
 });
 
 const updateDeviceSchema = Joi.object({
@@ -28,11 +29,11 @@ const updateDeviceSchema = Joi.object({
         .ip({ version: ['ipv4', 'ipv6'] })
         .messages({
             'string.ip': 'IP address must be a valid IPv4 or IPv6 address'
-        })
+        }),
+    listen_channel: Joi.string().max(100)
 }).min(1);
 
 
-// ✅ Export dengan CommonJS
 module.exports = {
     insertDeviceSchema, updateDeviceSchema
 };
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