diff --git a/tests/model_fields/test_binaryfield.py b/tests/model_fields/test_binaryfield.py
index d9caf411123..7796be70a6e 100644
--- a/tests/model_fields/test_binaryfield.py
+++ b/tests/model_fields/test_binaryfield.py
@@ -11,16 +11,17 @@ class BinaryFieldTests(TestCase):
     def test_set_and_retrieve(self):
         data_set = (self.binary_data, bytearray(self.binary_data), memoryview(self.binary_data))
         for bdata in data_set:
-            dm = DataModel(data=bdata)
-            dm.save()
-            dm = DataModel.objects.get(pk=dm.pk)
-            self.assertEqual(bytes(dm.data), bytes(bdata))
-            # Resave (=update)
-            dm.save()
-            dm = DataModel.objects.get(pk=dm.pk)
-            self.assertEqual(bytes(dm.data), bytes(bdata))
-            # Test default value
-            self.assertEqual(bytes(dm.short_data), b'\x08')
+            with self.subTest(data=repr(bdata)):
+                dm = DataModel(data=bdata)
+                dm.save()
+                dm = DataModel.objects.get(pk=dm.pk)
+                self.assertEqual(bytes(dm.data), bytes(bdata))
+                # Resave (=update)
+                dm.save()
+                dm = DataModel.objects.get(pk=dm.pk)
+                self.assertEqual(bytes(dm.data), bytes(bdata))
+                # Test default value
+                self.assertEqual(bytes(dm.short_data), b'\x08')
 
     def test_max_length(self):
         dm = DataModel(short_data=self.binary_data * 4)