diff --git a/src/public/app/widgets/view_widgets/calendar_view.spec.ts b/src/public/app/widgets/view_widgets/calendar_view.spec.ts
index 6640d2fb6..4e6446c3f 100644
--- a/src/public/app/widgets/view_widgets/calendar_view.spec.ts
+++ b/src/public/app/widgets/view_widgets/calendar_view.spec.ts
@@ -111,4 +111,18 @@ describe("Building events", () => {
         expect(events[1]).toMatchObject({ title: "Note 2", start: "2025-05-07" });
     });
 
+    it("discards relation as custom title with custom relation", async () => {
+        const noteIds = buildNotes([
+            { id: "myParentNote", title: "My parent note" },
+            { id: "mySharedTitle", title: "My custom title", "~myTitle": "myParentNote", "#calendar:title": "~myTitle" },
+            { title: "Note 1", "~myTitle": "mySharedTitle", "#startDate": "2025-05-05", "#calendar:title": "~myTitle" },
+            { title: "Note 2", "#startDate": "2025-05-07", "#calendar:title": "~myTitle" },
+        ]);
+        const events = await CalendarView.buildEvents(noteIds);
+
+        expect(events).toHaveLength(2);
+        expect(events[0]).toMatchObject({ title: "My shared custom title", start: "2025-05-05" });
+        expect(events[1]).toMatchObject({ title: "Note 2", start: "2025-05-07" });
+    });
+
 });