diff --git a/src/app/event/__tests__/EventCard.test.tsx b/src/app/event/__tests__/EventCard.test.tsx
index 9012b1d..c0d7535 100644
--- a/src/app/event/__tests__/EventCard.test.tsx
+++ b/src/app/event/__tests__/EventCard.test.tsx
@@ -1,6 +1,11 @@
-import { describe, it, expect, vi } from "vitest";
+import { describe, it, expect, vi, beforeEach } from "vitest";
 import { render, screen } from "@testing-library/react";
 import EventCard from "../EventCard";
+import { useDestinationStation } from "@/hooks/useDestinationStation";
+import { useJourneys } from "@/hooks/useJourneys";
+
+// vi.mock hoists, so these imports are the mocked versions
+// We can inspect their call arguments directly
 
 // Mock all hooks that EventCard depends on
 vi.mock("@/hooks/useGeolocation", () => ({
@@ -12,11 +17,11 @@ vi.mock("@/hooks/useGeolocation", () => ({
 }));
 
 vi.mock("@/hooks/useDestinationStation", () => ({
-  useDestinationStation: () => ({
+  useDestinationStation: vi.fn(() => ({
     station: { name: "Wien Hbf", extId: "0WB0F0001500" },
     loading: false,
     error: null,
-  }),
+  })),
 }));
 
 vi.mock("@/hooks/useGeocode", () => ({
@@ -28,11 +33,11 @@ vi.mock("@/hooks/useGeocode", () => ({
 }));
 
 vi.mock("@/hooks/useJourneys", () => ({
-  useJourneys: () => ({
+  useJourneys: vi.fn(() => ({
     journeys: [],
     loading: false,
     error: null,
-  }),
+  })),
 }));
 
 vi.mock("@/hooks/useBikeRoute", () => ({
@@ -43,6 +48,13 @@ vi.mock("@/hooks/useBikeRoute", () => ({
   }),
 }));
 
+vi.mock("@/hooks/useClock", () => ({
+  useClock: () => ({
+    countdown: { label: "No deadline set", color: "text-gray-400", urgent: false },
+    status: "upcoming",
+  }),
+}));
+
 vi.mock("@/lib/countdown-utils", () => ({
   calculateCountdown: () => ({
     label: "No deadline set",
@@ -52,6 +64,22 @@ vi.mock("@/lib/countdown-utils", () => ({
 }));
 
 describe("EventCard", () => {
+  beforeEach(() => {
+    (useDestinationStation as ReturnType<typeof vi.fn>).mockReset();
+    (useDestinationStation as ReturnType<typeof vi.fn>).mockImplementation(() => ({
+      station: { name: "Wien Hbf", extId: "0WB0F0001500" },
+      loading: false,
+      error: null,
+    }));
+
+    (useJourneys as ReturnType<typeof vi.fn>).mockReset();
+    (useJourneys as ReturnType<typeof vi.fn>).mockImplementation(() => ({
+      journeys: [],
+      loading: false,
+      error: null,
+    }));
+  });
+
   it("renders event title and destination", () => {
     const mockEvent = {
       id: "test-1",
@@ -67,4 +95,40 @@ describe("EventCard", () => {
     expect(screen.getByText("Team Meeting")).toBeInTheDocument();
     expect(screen.getByText("Wien Hbf")).toBeInTheDocument();
   });
+
+  it("passes destStation.station.extId to useJourneys as the destination argument", () => {
+    const mockEvent = {
+      id: "test-2",
+      title: "Lunch at Hofburg",
+      destination: "Hofburg",
+      eventTime: new Date("2025-12-01T12:00:00"),
+      source: "manual" as const,
+    };
+
+    const mockStation = { name: "Graz Hbf", extId: "0WB0F0000600" };
+
+    render(<EventCard event={mockEvent} originStation={mockStation} />);
+
+    // useDestinationStation should be called with the event's destination string
+    expect(useDestinationStation).toHaveBeenCalledWith("Hofburg");
+
+    // useJourneys should be called with origin extId as first arg
+    // and the destination station's extId as second arg (NOT null)
+    expect(useJourneys).toHaveBeenCalledWith("0WB0F0000600", "0WB0F0001500", new Date("2025-12-01T12:00:00"), 0);
+  });
+
+  it("passes null as originStation extId to useJourneys when originStation is null", () => {
+    const mockEvent = {
+      id: "test-3",
+      title: "Meeting without origin",
+      destination: "Parapluie",
+      eventTime: new Date("2025-12-01T10:00:00"),
+      source: "manual" as const,
+    };
+
+    render(<EventCard event={mockEvent} originStation={null} />);
+
+    // When originStation is null, the first arg to useJourneys should be null
+    expect(useJourneys).toHaveBeenCalledWith(null, "0WB0F0001500", new Date("2025-12-01T10:00:00"), 0);
+  });
 });