diff --git a/.github/workflows/code-quality.yml b/.github/workflows/code-quality.yml
index 00e3d35..5625349 100644
--- a/.github/workflows/code-quality.yml
+++ b/.github/workflows/code-quality.yml
@@ -16,7 +16,7 @@ jobs:
           dotnet-version: '10.x'
 
       - name: Run focused tests
-        run: dotnet test src/HuaJiBot.NET.UnitTest --filter 'FullyQualifiedName~DailySummaryTest|FullyQualifiedName~AsciiArtToolsTest|FullyQualifiedName~WebDataServiceTest|FullyQualifiedName~VisionInputTest|FullyQualifiedName~FlueBridgeTest|FullyQualifiedName~ClubAffairsReminderTest|FullyQualifiedName~CalendarOutputTest'
+        run: dotnet test src/HuaJiBot.NET.UnitTest --filter 'FullyQualifiedName~DailySummaryTest|FullyQualifiedName~AsciiArtToolsTest|FullyQualifiedName~WebDataServiceTest|FullyQualifiedName~VisionInputTest|FullyQualifiedName~FlueBridgeTest|FullyQualifiedName~ClubAffairsReminderTest|FullyQualifiedName~CalendarOutputTest|FullyQualifiedName~TicketReminderTest'
 
   format-check:
     runs-on: ubuntu-latest
diff --git a/src/HuaJiBot.NET.Plugin.RepairTeam/PluginMain.cs b/src/HuaJiBot.NET.Plugin.RepairTeam/PluginMain.cs
index 324768a..1e66e81 100644
--- a/src/HuaJiBot.NET.Plugin.RepairTeam/PluginMain.cs
+++ b/src/HuaJiBot.NET.Plugin.RepairTeam/PluginMain.cs
@@ -38,7 +38,7 @@ protected override void Initialize()
         _reminder = new TicketReminder(
             Service,
             Config,
-            _saturday.GetActiveTicketsAsync,
+            since => _saturday.GetActiveTicketsAsync(since),
             Path.Combine(Service.GetPluginDataPath(), "ticket_reminder.json")
         );
         _reminder.Start();
@@ -182,15 +182,10 @@ private async Task TicketsCommandAsync(GroupMessageEventArgs e)
     {
         if (!Config.RemindGroups.Contains(e.GroupId) || _saturday is null)
             return;
-        if (Config.RemindSince is not { } since)
-        {
-            await e.Reply("未配置 RemindSince，工单查询未启用");
-            return;
-        }
         List<Ticket> tickets;
         try
         {
-            tickets = await _saturday.GetActiveTicketsAsync(since);
+            tickets = await _saturday.GetActiveTicketsAsync();
         }
         catch (Exception ex)
         {
diff --git a/src/HuaJiBot.NET.Plugin.RepairTeam/SaturdayClient.cs b/src/HuaJiBot.NET.Plugin.RepairTeam/SaturdayClient.cs
index 37619b5..505edf6 100644
--- a/src/HuaJiBot.NET.Plugin.RepairTeam/SaturdayClient.cs
+++ b/src/HuaJiBot.NET.Plugin.RepairTeam/SaturdayClient.cs
@@ -53,8 +53,8 @@ private class LogDto
         public DateTimeOffset GmtCreate { get; set; }
     }
 
-    /// <summary>Tickets in progress that were created at or after <paramref name="since"/>.</summary>
-    public async Task<List<Ticket>> GetActiveTicketsAsync(DateTimeOffset since)
+    /// <summary>Tickets in progress, limited to those created at or after <paramref name="since"/> when given.</summary>
+    public async Task<List<Ticket>> GetActiveTicketsAsync(DateTimeOffset? since = null)
     {
         var tickets = new List<Ticket>();
         foreach (var status in ActiveStatuses)
@@ -64,7 +64,7 @@ public async Task<List<Ticket>> GetActiveTicketsAsync(DateTimeOffset since)
                 var page = await GetAsync<List<EventDto>>(
                     $"events?status={status}&order=DESC&limit={PageSize}&offset={offset}"
                 );
-                var recent = page.TakeWhile(e => e.GmtCreate >= since).ToList();
+                var recent = page.TakeWhile(e => since is null || e.GmtCreate >= since).ToList();
                 foreach (var summary in recent)
                 {
                     try
diff --git a/src/HuaJiBot.NET.UnitTest/TicketReminderTest.cs b/src/HuaJiBot.NET.UnitTest/TicketReminderTest.cs
index 607dc6b..74c6ed1 100644
--- a/src/HuaJiBot.NET.UnitTest/TicketReminderTest.cs
+++ b/src/HuaJiBot.NET.UnitTest/TicketReminderTest.cs
@@ -227,6 +227,29 @@ _ when path.StartsWith("/events?") => (HttpStatusCode.OK, "[]"),
         Assert.That(errors, Has.Count.EqualTo(1).And.Some.Contains("#21"));
     }
 
+    [Test]
+    public async Task Client_WithoutSince_ReturnsOldTicketsToo()
+    {
+        var handler = new StubHandler(path =>
+            path switch
+            {
+                _ when path.StartsWith("/events?status=accepted&order=DESC&limit=50&offset=0") => (
+                    HttpStatusCode.OK,
+                    $"[{Summary(711, "2026-05-15T14:00:10+08:00")},{Summary(508, "2025-06-06T16:25:04+08:00")}]"
+                ),
+                _ when path.StartsWith("/events?") => (HttpStatusCode.OK, "[]"),
+                "/events/711" => (HttpStatusCode.OK, Detail(711, "accepted", "2026-05-15T14:00:10+08:00")),
+                "/events/508" => (HttpStatusCode.OK, Detail(508, "accepted", "2025-06-06T16:25:04+08:00")),
+                _ => (HttpStatusCode.NotFound, ""),
+            }
+        );
+        var client = new SaturdayClient(new HttpClient(handler), "https://api.test", (_, _) => { });
+
+        var tickets = await client.GetActiveTicketsAsync();
+
+        Assert.That(tickets.Select(x => x.Id), Is.EqualTo(new long[] { 711, 508 }));
+    }
+
     [Test]
     public async Task Client_PagesUntilAPageEndsBeforeSince()
     {