diff --git a/apps/web/src/viewmodels/structures/auto-collapse/behaviours/behaviours.ts b/apps/web/src/viewmodels/structures/auto-collapse/behaviours/behaviours.ts
new file mode 100644
index 0000000000..216fae7291
--- /dev/null
+++ b/apps/web/src/viewmodels/structures/auto-collapse/behaviours/behaviours.ts
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2026 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+import { CollapseOnWindowResizeBehaviour } from "./CollapseOnWindowResizeBehaviour";
+
+/**
+ * The auto-collapse behaviours used by the app.
+ */
+export const Behaviours = [CollapseOnWindowResizeBehaviour];