diff --git a/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorTests.cs b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorTests.cs
index 1bff39fd..ef282460 100644
--- a/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorTests.cs
+++ b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorTests.cs
@@ -289,7 +289,7 @@ public sealed class DraftValidatorTests
         TagConfig = "{}",
     };
 
-    private static UnsTagReference BuildReference(string refId, string equipmentId, string tagId, string? overrideName) => new()
+    private static UnsTagReference BuildReference(string refId, string equipmentId, string tagId, string? overrideName = null) => new()
     {
         UnsTagReferenceId = refId,
         EquipmentId = equipmentId,
@@ -312,11 +312,6 @@ public sealed class DraftValidatorTests
         AccessLevel = TagAccessLevel.Read, TagConfig = "{}",
     };
 
-    private static UnsTagReference BuildReference(string id, string equipmentId, string tagId, string? overrideName = null) => new()
-    {
-        UnsTagReferenceId = id, EquipmentId = equipmentId, TagId = tagId, DisplayNameOverride = overrideName,
-    };
-
     /// <summary>A VirtualTag script using <c>{{equip}}/Speed</c> with no reference "Speed" on the equipment is
     /// a deploy error naming the equipment + the missing ref.</summary>
     [Fact]