diff --git a/Dalamud/Interface/Internal/Windows/SelfTest/AgingSteps/DutyStateAgingStep.cs b/Dalamud/Interface/Internal/Windows/SelfTest/AgingSteps/DutyStateAgingStep.cs
new file mode 100644
index 000000000..2a92d7bd3
--- /dev/null
+++ b/Dalamud/Interface/Internal/Windows/SelfTest/AgingSteps/DutyStateAgingStep.cs
@@ -0,0 +1,52 @@
+using Dalamud.Game.DutyState;
+using ImGuiNET;
+
+namespace Dalamud.Interface.Internal.Windows.SelfTest.AgingSteps;
+
+/// <summary>
+/// Test setup for the DutyState service class.
+/// </summary>
+internal class DutyStateAgingStep : IAgingStep
+{
+    private bool subscribed = false;
+    private bool hasPassed = false;
+
+    /// <inheritdoc/>
+    public string Name => "Test DutyState";
+
+    /// <inheritdoc/>
+    public SelfTestStepResult RunStep()
+    {
+        var dutyState = Service<DutyState>.Get();
+
+        ImGui.Text("Enter a duty now...");
+
+        if (!this.subscribed)
+        {
+            dutyState.DutyStarted += this.DutyStateOnDutyStarted;
+            this.subscribed = true;
+        }
+
+        if (this.hasPassed)
+        {
+            dutyState.DutyStarted -= this.DutyStateOnDutyStarted;
+            this.subscribed = false;
+            return SelfTestStepResult.Pass;
+        }
+
+        return SelfTestStepResult.Waiting;
+    }
+
+    /// <inheritdoc/>
+    public void CleanUp()
+    {
+        var dutyState = Service<DutyState>.Get();
+
+        dutyState.DutyStarted -= this.DutyStateOnDutyStarted;
+    }
+
+    private void DutyStateOnDutyStarted(object? sender, ushort e)
+    {
+        this.hasPassed = true;
+    }
+}
diff --git a/Dalamud/Interface/Internal/Windows/SelfTest/SelfTestWindow.cs b/Dalamud/Interface/Internal/Windows/SelfTest/SelfTestWindow.cs
index 352c5d322..33a3e57cd 100644
--- a/Dalamud/Interface/Internal/Windows/SelfTest/SelfTestWindow.cs
+++ b/Dalamud/Interface/Internal/Windows/SelfTest/SelfTestWindow.cs
@@ -42,6 +42,7 @@ internal class SelfTestWindow : Window
             new PartyFinderAgingStep(),
             new HandledExceptionAgingStep(),
             new LogoutEventAgingStep(),
+            new DutyStateAgingStep(),
         };
 
     private readonly List<(SelfTestStepResult Result, TimeSpan? Duration)> stepResults = new();