diff --git a/unittests/test_property.py b/unittests/test_property.py
index 6e1318bed2f9b1b945edb5e0a256b6cf7e9a722e..8c8ee3a6f83e1660ca53edf5897ff85d1ae1cd20 100644
--- a/unittests/test_property.py
+++ b/unittests/test_property.py
@@ -114,22 +114,22 @@ def test_is_reference():
     p4 = Property(id=4, datatype=db.DATETIME)
     p5 = Property(id=5, datatype=db.BOOLEAN)
     p6 = Property(id=6, datatype=db.REFERENCE)
-    assert p1.is_reference() == False
-    assert p2.is_reference() == False
-    assert p3.is_reference() == False
-    assert p4.is_reference() == False
-    assert p5.is_reference() == False
-    assert p6.is_reference() == True
+    assert p1.is_reference() is False
+    assert p2.is_reference() is False
+    assert p3.is_reference() is False
+    assert p4.is_reference() is False
+    assert p5.is_reference() is False
+    assert p6.is_reference() is True
 
     p7 = Property(id=7)
     p8 = Property(id=8, value=db.RecordType(id=1000))
     p8.is_valid = lambda: True
-    assert p7.is_reference() == None  # cannot be resolved without calling a server
-    assert p8.is_reference() == True
+    assert p7.is_reference() is None  # cannot be resolved without calling a server
+    assert p8.is_reference() is True
 
     p10 = Property(id=10)
     p20 = Property(id=20)
     p30 = Property(id=30)
-    assert p10.is_reference(server_retrieval=True) == False
-    assert p20.is_reference(server_retrieval=True) == True
-    assert p30.is_reference(server_retrieval=True) == True
+    assert p10.is_reference(server_retrieval=True) is False
+    assert p20.is_reference(server_retrieval=True) is True
+    assert p30.is_reference(server_retrieval=True) is True