diff --git a/test/registered/unit/disaggregation/test_nixl_backend_basic.py b/test/registered/unit/disaggregation/test_nixl_backend_basic.py
index 1553b08a9..58e9fa18f 100644
--- a/test/registered/unit/disaggregation/test_nixl_backend_basic.py
+++ b/test/registered/unit/disaggregation/test_nixl_backend_basic.py
@@ -202,7 +202,7 @@ class TestNixlTransferInfo(CustomTestCase):
             ]
         )
 
-        self.assertTrue(info.is_dummy())
+        self.assertTrue(info.is_dummy)
 
     def test_explicit_dummy_frame_true_with_prefix_hit_stays_dummy(self):
         # A dummy rank whose request also has a decode-side prefix hit: the
@@ -223,7 +223,7 @@ class TestNixlTransferInfo(CustomTestCase):
             ]
         )
 
-        self.assertTrue(info.is_dummy())
+        self.assertTrue(info.is_dummy)
 
     def test_explicit_dummy_frame_false_with_empty_indices_is_real(self):
         # Full prefix hit as the sender encodes it: empty kv indices,
@@ -243,7 +243,7 @@ class TestNixlTransferInfo(CustomTestCase):
             ]
         )
 
-        self.assertFalse(info.is_dummy())
+        self.assertFalse(info.is_dummy)
 
     def test_explicit_dummy_frame_false_for_real_transfer(self):
         info = TransferInfo.from_zmq(
@@ -261,7 +261,7 @@ class TestNixlTransferInfo(CustomTestCase):
             ]
         )
 
-        self.assertFalse(info.is_dummy())
+        self.assertFalse(info.is_dummy)
 
     def test_fallback_without_dummy_frame_reads_prefix_hit_dummy_as_real(self):
         # Old-peer fallback: without msg[9], a dummy rank with a decode-side
@@ -281,7 +281,7 @@ class TestNixlTransferInfo(CustomTestCase):
             ]
         )
 
-        self.assertFalse(info.is_dummy())
+        self.assertFalse(info.is_dummy)
 
 
 class TestNixlKVArgsRegisterInfo(CustomTestCase):