diff --git a/AsbCloudDb/EFExtentions.cs b/AsbCloudDb/EFExtentions.cs
index 6f6dac34..5114120b 100644
--- a/AsbCloudDb/EFExtentions.cs
+++ b/AsbCloudDb/EFExtentions.cs
@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
 using Microsoft.EntityFrameworkCore.Metadata;
 using System;
 using System.Collections.Generic;
@@ -30,6 +31,13 @@ namespace AsbCloudDb
             builder.HasConversion(
                         s => System.Text.Json.JsonSerializer.Serialize(s, jsonSerializerOptions),
                         s => System.Text.Json.JsonSerializer.Deserialize<TProperty>(s, jsonSerializerOptions)!);
+
+            ValueComparer<TProperty> valueComparer = new (
+                (a,b) => a.GetHashCode() == b.GetHashCode(),
+                i => i.GetHashCode(),
+                i => i);
+            
+            builder.Metadata.SetValueComparer(valueComparer);
             return builder;
         }