diff --git a/modules/worker/back/models/operator.js b/modules/worker/back/models/operator.js
index e9b590fa6..63b5154ed 100644
--- a/modules/worker/back/models/operator.js
+++ b/modules/worker/back/models/operator.js
@@ -1,6 +1,6 @@
 module.exports = function(Self) {
     Self.observe('after save', async function(ctx) {
-        const instance = ctx.instance;
+        const instance = ctx.data;
         const models = Self.app.models;
         const options = ctx.options;