diff --git a/test/detection/test_core.py b/test/detection/test_core.py
index 402d9ef1c..dfa784fcb 100644
--- a/test/detection/test_core.py
+++ b/test/detection/test_core.py
@@ -225,10 +225,10 @@
         ),
         (
             Detections.empty(),
-            np.isin(Detections.empty()["class_name"], [0, 1, 2]),
+            np.isin(Detections.empty()["class_name"], ["cat", "dog"]),
             Detections.empty(),
             DoesNotRaise(),
-        ),
+        ),  # Filter an empty detections by specific class names
     ],
 )
 def test_getitem(