diff --git a/tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs b/tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs
index 2198d6d..8cb621e 100644
--- a/tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs
+++ b/tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs
@@ -173,6 +173,7 @@ public sealed class AuthorizedSessionServiceTests
         var gmId = 1001L;
         var groupId = Guid.NewGuid();
         var sessionId = Guid.NewGuid();
+        var originalTime = DateTime.UtcNow;
         var store = new FakeSessionStore(
             groups:
             [
@@ -180,11 +181,11 @@ public sealed class AuthorizedSessionServiceTests
             ],
             sessions:
             [
-                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42, 4, 1, 0)
+                new(sessionId, groupId, "Session A", originalTime, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42, 4, 1, 0)
             ]);
         var service = new AuthorizedSessionService(store);
 
-        await service.UpdateSessionForGmAsync(sessionId, gmId, "Updated Title", DateTime.UtcNow.AddDays(1), "https://example.test/b", 4);
+        await service.UpdateSessionForGmAsync(sessionId, gmId, "Updated Title", originalTime, "https://example.test/a", 4);
 
         Assert.Single(store.LogEntries);
         Assert.Equal("Title", store.LogEntries[0].ChangeType);