diff --git a/Orm/Xtensive.Orm/Orm/Internals/KeyFactory.cs b/Orm/Xtensive.Orm/Orm/Internals/KeyFactory.cs
index ef8da2c49e..29c5ed3ca0 100644
--- a/Orm/Xtensive.Orm/Orm/Internals/KeyFactory.cs
+++ b/Orm/Xtensive.Orm/Orm/Internals/KeyFactory.cs
@@ -157,9 +157,9 @@ private static GenericKeyFactory BuildGenericKeyFactory(TypeInfo typeInfo)
       var keyType = WellKnownOrmTypes.Key.Assembly.GetType(keyTypeName);
       keyType = keyType.MakeGenericType(descriptor.ToArray(descriptor.Count));
       var defaultConstructor = DelegateHelper.CreateDelegate<Func<string, TypeInfo, Tuple, TypeReferenceAccuracy, Key>>(
-        null, keyType, "Create", ArrayUtils<Type>.EmptyArray);
+        null, keyType, "Create", Array.Empty<Type>());
       var keyIndexBasedConstructor = DelegateHelper.CreateDelegate<Func<string, TypeInfo, Tuple, TypeReferenceAccuracy, int[], Key>>(
-        null, keyType, "Create", ArrayUtils<Type>.EmptyArray);
+        null, keyType, "Create", Array.Empty<Type>());
       return new GenericKeyFactory(keyType, defaultConstructor, keyIndexBasedConstructor);
     }
   }