diff --git a/GZCTF/Repositories/GameRepository.cs b/GZCTF/Repositories/GameRepository.cs
index f434d8789..39e1f396c 100644
--- a/GZCTF/Repositories/GameRepository.cs
+++ b/GZCTF/Repositories/GameRepository.cs
@@ -147,7 +147,8 @@ private static IEnumerable<ScoreboardItem> GenScoreboardItems(Data[] data, IDict
                         };
                     }).ToList()
                 },
-                LastSubmissionTime = j.Select(s => s.Submission?.SubmitTimeUTC ?? DateTimeOffset.UtcNow),
+                LastSubmissionTime = j.Select(s => s.Submission?.SubmitTimeUTC ?? DateTimeOffset.UtcNow)
+                    .OrderByDescending(t => t).FirstOrDefault()
             }).OrderByDescending(j => j.Item.Score) //成绩倒序，最后提交时间正序
             .ThenBy(j => j.LastSubmissionTime)
             .Select((j, i) =>
diff --git a/GZCTF/Utils/LogHelper.cs b/GZCTF/Utils/LogHelper.cs
index d0eef01aa..3040ca7ed 100644
--- a/GZCTF/Utils/LogHelper.cs
+++ b/GZCTF/Utils/LogHelper.cs
@@ -119,7 +119,7 @@ public static Logger GetLogger(IConfiguration configuration, IServiceProvider se
         restrictedToMinimumLevel: LogEventLevel.Debug,
         rollOnFileSizeLimit: true,
         retainedFileCountLimit: 5,
-        hooks: new ArchiveHooks(CompressionLevel.Optimal, "log/archive/{UtcDate:yyyy-MM}/{UtcDate:yyyy-MM-dd}")
+        hooks: new ArchiveHooks(CompressionLevel.Optimal, "log/archive/{UtcDate:yyyy-MM}")
     ))
     .WriteTo.Async(t => t.PostgreSQL(
         connectionString: configuration.GetConnectionString("DefaultConnection"),