diff --git a/KLHZ.Trader.Core/DataLayer/TraderDbContext.cs b/KLHZ.Trader.Core/DataLayer/TraderDbContext.cs
index 4b8b13b..0673cd7 100644
--- a/KLHZ.Trader.Core/DataLayer/TraderDbContext.cs
+++ b/KLHZ.Trader.Core/DataLayer/TraderDbContext.cs
@@ -47,6 +47,8 @@ namespace KLHZ.Trader.Core.DataLayer
             {
                 entity.HasKey(e1 => new { e1.Time, e1.Id });
                 entity.Ignore(e1 => e1.IsHistoricalData);
+                entity.Property(p => p.Id)
+                    .ValueGeneratedOnAdd();
                 entity.Property(e => e.Time)
                     .HasConversion(
                         v => v.ToUniversalTime(),