diff --git a/tests/Core/ZB.MOM.WW.OtOpcUa.Core.VirtualTags.Tests/VirtualTagEngineTests.cs b/tests/Core/ZB.MOM.WW.OtOpcUa.Core.VirtualTags.Tests/VirtualTagEngineTests.cs
index cf252d1..6e76019 100644
--- a/tests/Core/ZB.MOM.WW.OtOpcUa.Core.VirtualTags.Tests/VirtualTagEngineTests.cs
+++ b/tests/Core/ZB.MOM.WW.OtOpcUa.Core.VirtualTags.Tests/VirtualTagEngineTests.cs
@@ -140,8 +140,8 @@ public sealed class VirtualTagEngineTests
 
         engine.Load([
             new VirtualTagDefinition("Hang", DriverDataType.Int32, """
-                var end = Environment.TickCount64 + 5000;
-                while (Environment.TickCount64 < end) { }
+                var end = DateTime.UtcNow.AddSeconds(5);
+                while (DateTime.UtcNow < end) { }
                 return 1;
                 """),
             new VirtualTagDefinition("Ok", DriverDataType.Int32, """return 42;"""),