diff --git a/src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlMappers.cs b/src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlMappers.cs
index 5e765f6c..1b268089 100644
--- a/src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlMappers.cs
+++ b/src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlMappers.cs
@@ -364,7 +364,7 @@ public static class PostgreSqlMappers
             UpdatedAt = DateTime.UtcNow,
             InitialBalance = backtest.InitialBalance,
             NetPnl = backtest.NetPnl,
-            PositionCount = backtest.Positions.Count
+            PositionCount = backtest.PositionCount
         };
     }