diff --git a/SeaHavenIndustries.Tests/WorkOrderBoardUpdateServiceTests.cs b/SeaHavenIndustries.Tests/WorkOrderBoardUpdateServiceTests.cs
index 7c1b678..dabf99d 100644
--- a/SeaHavenIndustries.Tests/WorkOrderBoardUpdateServiceTests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderBoardUpdateServiceTests.cs
@@ -272,7 +272,7 @@ public class WorkOrderBoardUpdateServiceTests
 
         Assert.Equal("InvalidValue", ex.Code);
         Assert.Contains("isPastDue", ex.Message, StringComparison.Ordinal);
-        Assert.Contains("scheduledDate", ex.Message, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("dueDate", ex.Message, StringComparison.OrdinalIgnoreCase);
     }
 
     [Fact]