diff --git a/apps/desktop/src/lib/__tests__/sidebar/sidebarTreeItemLayout.spec.ts b/apps/desktop/src/lib/__tests__/sidebar/sidebarTreeItemLayout.spec.ts
index cf122b5f60..1cc21d584c 100644
--- a/apps/desktop/src/lib/__tests__/sidebar/sidebarTreeItemLayout.spec.ts
+++ b/apps/desktop/src/lib/__tests__/sidebar/sidebarTreeItemLayout.spec.ts
@@ -47,6 +47,7 @@ describe("sidebar tree item layout", () => {
     expect(canTreeNodeShowExpander({ type: "etcd-dashboard", childCount: 0 })).toBe(false);
     expect(canTreeNodeShowExpander({ type: "etcd-access-control", childCount: 0 })).toBe(false);
     expect(canTreeNodeShowExpander({ type: "consul-overview", childCount: 0 })).toBe(false);
+    expect(canTreeNodeShowExpander({ type: "mqtt-topic", childCount: 0 })).toBe(false);
   });
 
   it("shows an expander only for package nodes explicitly marked as containers", () => {
diff --git a/apps/desktop/src/lib/sidebar/sidebarTreeItemLayout.ts b/apps/desktop/src/lib/sidebar/sidebarTreeItemLayout.ts
index ed759a9e5c..e330873b35 100644
--- a/apps/desktop/src/lib/sidebar/sidebarTreeItemLayout.ts
+++ b/apps/desktop/src/lib/sidebar/sidebarTreeItemLayout.ts
@@ -18,6 +18,7 @@ const leafTypes: Set<TreeNodeType> = new Set([
   "type-method",
   "object-browser",
   "redis-db",
+  "mqtt-topic",
   "mq-tenant",
   "etcd-root",
   "etcd-dashboard",