diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.IntegrationTests/Sdk2LifecycleSoakTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.IntegrationTests/Sdk2LifecycleSoakTests.cs
index 0b6cbd26..492d07b1 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.IntegrationTests/Sdk2LifecycleSoakTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.IntegrationTests/Sdk2LifecycleSoakTests.cs
@@ -323,13 +323,15 @@ public sealed class Sdk2LifecycleSoakTests
         (await BrowseAsync(client, ct)).IsEmpty.ShouldBeFalse();
         (await PageAsync(client, default, false, ct)).ContinuationPoint.IsEmpty.ShouldBeFalse();
         var oldInternal = rig.Server.CurrentInstance;
-        var oldSessions = oldInternal.SessionManager.GetSessions().ToArray();
-        var oldSubscriptions = oldInternal.SubscriptionManager.GetSubscriptions().ToArray();
+        var oldSessionManager = oldInternal.SessionManager;
+        var oldSubscriptionManager = oldInternal.SubscriptionManager;
+        var oldSessions = oldSessionManager.GetSessions().ToArray();
+        var oldSubscriptions = oldSubscriptionManager.GetSubscriptions().ToArray();
         var oldManager = rig.Server.CertificateManager!;
         var oldCores = CertificateCores(oldManager);
         await rig.RestartAsync(ct).WaitAsync(TimeSpan.FromSeconds(20), ct);
-        oldInternal.SessionManager.GetSessions().ShouldBeEmpty();
-        oldInternal.SubscriptionManager.GetSubscriptions().ShouldBeEmpty();
+        oldSessionManager.GetSessions().ShouldBeEmpty();
+        oldSubscriptionManager.GetSubscriptions().ShouldBeEmpty();
         oldSubscriptions.ShouldAllBe(item => item.MonitoredItemCount == 0);
         foreach (var session in oldSessions) ContinuationCounts(session).ShouldBe((0, 0));
         RequiredField<bool>(oldManager, "m_disposed").ShouldBeTrue();