diff --git a/src/core/tests/Deal.Tests.Unit/Support/OperatorAuditEndpointsHttpTests.cs b/src/core/tests/Deal.Tests.Unit/Support/OperatorAuditEndpointsHttpTests.cs
index 3fdef10..557d9d9 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/OperatorAuditEndpointsHttpTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/OperatorAuditEndpointsHttpTests.cs
@@ -282,6 +282,7 @@ public sealed class OperatorAuditEndpointsHttpTests
     {
         var tenantId = Guid.NewGuid();
         var auditStore = new TestAuditLogStore();
+        var userStore = NewUserStore(tenantId, "owner@acme");
         await auditStore.Store.AppendAsync(
             new AuditRecordDto(
                 AuditEvents.TenantStatusChanged,
@@ -295,7 +296,7 @@ public sealed class OperatorAuditEndpointsHttpTests
 
         await OperatorAuthHttpHost.RunAsync(
             NewOperatorStore(),
-            NewUserStore(),
+            userStore,
             async (baseAddress, _, _, _, _, _) =>
             {
                 HttpClient operatorClient = CreateClient(baseAddress);
@@ -306,6 +307,7 @@ public sealed class OperatorAuditEndpointsHttpTests
 
                 JsonElement item = (await ReadJsonAsync(response)).GetProperty("items")[0];
                 Assert.Equal(tenantId, item.GetProperty("tenantId").GetGuid());
+                Assert.Equal("owner@acme", item.GetProperty("userName").GetString());
                 Assert.Equal("acme", item.GetProperty("tenantName").GetString());
                 JsonElement change = item.GetProperty("changes")[0];
                 Assert.Equal("status", change.GetProperty("field").GetString());
@@ -346,6 +348,20 @@ public sealed class OperatorAuditEndpointsHttpTests
         return store;
     }
 
+    // Фейк-хранилище с одним пользователем заданного тенанта (владелец для разрешения логина).
+    private static TestAuthStore NewUserStore(Guid tenantId, string login)
+    {
+        var passwordHasher = TestHashers.New();
+        var store = new TestAuthStore();
+        store.AddUser(new StoredUserDto(
+            Guid.NewGuid(),
+            login,
+            tenantId,
+            "active",
+            passwordHasher.Hash(UserPassword)));
+        return store;
+    }
+
     // HTTP-клиент с собственным CookieContainer (изоляция сценариев кук).
     private static HttpClient CreateClient(string baseAddress) =>
         new(new HttpClientHandler { UseCookies = true, CookieContainer = new CookieContainer() })
diff --git a/src/core/tests/Deal.Tests.Unit/Support/TestAuthStore.cs b/src/core/tests/Deal.Tests.Unit/Support/TestAuthStore.cs
index 50925f6..2677abc 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/TestAuthStore.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/TestAuthStore.cs
@@ -50,6 +50,8 @@ public sealed class TestAuthStore
             .Returns(ci => FindById(ci.ArgAt<Guid>(0)));
         Store.ListUsersByTenantIdAsync(Arg.Any<Guid>(), Arg.Any<CancellationToken>())
             .Returns(ci => ListByTenantId(ci.ArgAt<Guid>(0)));
+        Store.FindOwnerLoginsByTenantIdsAsync(Arg.Any<IReadOnlyCollection<Guid>>(), Arg.Any<CancellationToken>())
+            .Returns(ci => OwnerLogins(ci.ArgAt<IReadOnlyCollection<Guid>>(0)));
         Store.When(s => s.CreateUserAsync(Arg.Any<StoredUserDto>(), Arg.Any<CancellationToken>()))
             .Do(ci =>
             {
@@ -113,6 +115,17 @@ public sealed class TestAuthStore
             .ToList();
     }
 
+    private IReadOnlyDictionary<Guid, string> OwnerLogins(IReadOnlyCollection<Guid> tenantIds)
+    {
+        var owners = new Dictionary<Guid, string>();
+        foreach (StoredUserDto user in _users.Where(u => tenantIds.Contains(u.TenantId)))
+        {
+            owners.TryAdd(user.TenantId, user.Login);
+        }
+
+        return owners;
+    }
+
     private void UpdatePasswordHash(Guid userId, string passwordHash)
     {
         int index = _users.FindIndex(u => u.Id == userId);