diff --git a/src/infra/heartbeat-runner.active-hours-schedule.e2e.test.ts b/src/infra/heartbeat-runner.active-hours-schedule.e2e.test.ts
index 9ca2d01786e..2d7c4f03c37 100644
--- a/src/infra/heartbeat-runner.active-hours-schedule.e2e.test.ts
+++ b/src/infra/heartbeat-runner.active-hours-schedule.e2e.test.ts
@@ -29,7 +29,7 @@ describe("heartbeat scheduler: activeHours-aware scheduling (#75487)", () => {
           ...(overrides?.userTimezone ? { userTimezone: overrides.userTimezone } : {}),
         },
       },
-    } as OpenClawConfig;
+    };
   }
 
   function resolveDueFromNow(nowMs: number, intervalMs: number, agentId: string) {
@@ -81,7 +81,7 @@ describe("heartbeat scheduler: activeHours-aware scheduling (#75487)", () => {
     await vi.advanceTimersByTimeAsync(safeEndOfWindow - Date.now());
 
     expect(runSpy).toHaveBeenCalled();
-    const firstCallHourUTC = new Date(callTimes[0]!).getUTCHours();
+    const firstCallHourUTC = new Date(callTimes[0]).getUTCHours();
     expect(firstCallHourUTC).toBeGreaterThanOrEqual(9);
     expect(firstCallHourUTC).toBeLessThan(17);
 
@@ -136,7 +136,7 @@ describe("heartbeat scheduler: activeHours-aware scheduling (#75487)", () => {
     await vi.advanceTimersByTimeAsync(48 * 60 * 60_000);
 
     expect(runSpy).toHaveBeenCalled();
-    const firstCallHourUTC = new Date(callTimes[0]!).getUTCHours();
+    const firstCallHourUTC = new Date(callTimes[0]).getUTCHours();
     expect(firstCallHourUTC).toBeGreaterThanOrEqual(13);
     expect(firstCallHourUTC).toBeLessThan(21);
 
@@ -238,10 +238,10 @@ describe("heartbeat scheduler: activeHours-aware scheduling (#75487)", () => {
 
     await vi.advanceTimersByTimeAsync(8 * 60 * 60_000);
     expect(runSpy).toHaveBeenCalled();
-    const firstCallHour = new Date(callTimes[0]!).getUTCHours();
+    const firstCallHour = new Date(callTimes[0]).getUTCHours();
     expect(firstCallHour).toBeGreaterThanOrEqual(8);
     expect(firstCallHour).toBeLessThan(20);
-    expect(new Date(callTimes[0]!).getUTCDate()).toBe(15); // today, not tomorrow
+    expect(new Date(callTimes[0]).getUTCDate()).toBe(15); // today, not tomorrow
 
     runner.stop();
   });
@@ -282,7 +282,7 @@ describe("heartbeat scheduler: activeHours-aware scheduling (#75487)", () => {
     await vi.advanceTimersByTimeAsync(endOfUtcWindow - Date.now());
 
     expect(runSpy).toHaveBeenCalled();
-    const firstCall = new Date(callTimes[0]!);
+    const firstCall = new Date(callTimes[0]);
     expect(firstCall.getUTCHours()).toBe(16);
     expect(firstCall.getUTCDate()).toBe(15);