diff --git a/tests/AcDream.App.Tests/UI/UiItemSlotTests.cs b/tests/AcDream.App.Tests/UI/UiItemSlotTests.cs
index 381c281c..489fdf65 100644
--- a/tests/AcDream.App.Tests/UI/UiItemSlotTests.cs
+++ b/tests/AcDream.App.Tests/UI/UiItemSlotTests.cs
@@ -28,4 +28,14 @@ public class UiItemSlotTests
         Assert.Equal(0x5001u, s.ItemId);
         Assert.Equal(0x99u, s.IconTexture);
     }
+
+    [Fact]
+    public void Clear_afterSetItem_resetsToEmpty()
+    {
+        var s = new UiItemSlot();
+        s.SetItem(0x5001u, 0x99u);
+        s.Clear();
+        Assert.Equal(0u, s.ItemId);
+        Assert.Equal(0u, s.IconTexture);
+    }
 }