diff --git a/test/javascripts/unit/routes/discourse-ai-shared-conversation-show-route-test.js b/test/javascripts/unit/routes/discourse-ai-shared-conversation-show-route-test.js
index 462c5aad..65e89c30 100644
--- a/test/javascripts/unit/routes/discourse-ai-shared-conversation-show-route-test.js
+++ b/test/javascripts/unit/routes/discourse-ai-shared-conversation-show-route-test.js
@@ -1,5 +1,6 @@
 import { setupTest } from "ember-qunit";
 import { module, test } from "qunit";
+import sinon from "sinon";
 
 module(
   "Unit | Route | discourse-ai-shared-conversation-show",
@@ -18,47 +19,43 @@ module(
         "route:discourse-ai-shared-conversation-show"
       );
 
-      const originalOpen = window.open;
-      const originalRedirect = route.redirect;
+      const windowOpenStub = sinon.stub(window, "open");
+      const routeRedirectStub = sinon.stub(route, "redirect");
 
-      // Test when external_links_in_new_tab is true
+      // external_links_in_new_tab = true
       route.set("currentUser", {
         user_option: {
           external_links_in_new_tab: true,
         },
       });
 
-      window.open = (url, target) => {
+      windowOpenStub.callsFake((url, target) => {
         assert.equal(
           url,
           "https://www.discourse.org",
           "window.open was called with the correct URL"
         );
         assert.equal(target, "_blank", 'window.open was called with "_blank"');
-      };
+      });
 
       route.beforeModel(transition);
 
-      // Test when external_links_in_new_tab is false
+      // external_links_in_new_tab = false
       route.set("currentUser", {
         user_option: {
           external_links_in_new_tab: false,
         },
       });
 
-      route.redirect = (url) => {
+      routeRedirectStub.callsFake((url) => {
         assert.equal(
           url,
           "https://www.discourse.org",
           "redirect was called with the correct URL"
         );
-      };
+      });
 
       route.beforeModel(transition);
-
-      // Reset
-      window.open = originalOpen;
-      route.redirect = originalRedirect;
     });
   }
 );