diff --git a/manifest.json b/manifest.json
index f68f8377..a5f66530 100644
--- a/manifest.json
+++ b/manifest.json
@@ -3,7 +3,7 @@
   "name": "JDN",
   "description": "JDN – helps Test Automation Engineer to create Page Objects in the test automation framework and speed up test development",
   "devtools_page": "index.html",
-  "version": "3.13.530",
+  "version": "3.13.531",
   "icons": {
     "128": "icon128.png"
   },
diff --git a/package.json b/package.json
index 19885e98..f36c1595 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jdn-ai-chrome-extension",
-  "version": "3.13.530",
+  "version": "3.13.531",
   "description": "jdn-ai chrome extension",
   "scripts": {
     "start": "webpack --watch --env devenv",
diff --git a/src/index.js b/src/index.js
index 2f5ff6d6..836198e4 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,4 +1,5 @@
 import "./icon128.png";
+import { ScriptMsg } from "./pageServices/scriptMsg.constants";
 
 window.onload = () => {
   chrome.devtools.panels.create("JDN", "icon128.png", "app.html");
@@ -8,7 +9,7 @@ window.onbeforeunload = () => {
   const tabId = chrome.devtools.inspectedWindow.tabId;
 
   chrome.tabs.sendMessage(tabId, {
-    message: "SET_CLOSED_SESSION",
+    message: ScriptMsg.SetClosedSession,
     param: { tabId, isClosed: true },
   });
 };