diff --git a/apps/client/src/test/setup.ts b/apps/client/src/test/setup.ts
index f15c07567..ccaf91d88 100644
--- a/apps/client/src/test/setup.ts
+++ b/apps/client/src/test/setup.ts
@@ -13,7 +13,8 @@ function injectGlobals() {
     uncheckedWindow.$ = $;
     uncheckedWindow.WebSocket = () => {};
     uncheckedWindow.glob = {
-        isMainWindow: true
+        isMainWindow: true,
+        windowId: "main"
     };
 }