diff --git a/tests/test_bloom_filter.py b/tests/test_bloom_filter.py
index 0c4b22b..f850dce 100644
--- a/tests/test_bloom_filter.py
+++ b/tests/test_bloom_filter.py
@@ -10,21 +10,21 @@ def test_basic(self):
             layer_size=32000000,
         )
 
-        self.assertEqual(filter.false_positive_rate, 0)
+        self.assertEqual(filter.false_positive_rate(), 0)
 
         self.assertFalse(filter.exists('foo'))
 
         filter.insert('foo')
 
         self.assertTrue(filter.exists('foo'))
-        self.assertGreater(filter.false_positive_rate, 0)
+        self.assertGreater(filter.false_positive_rate(), 0)
 
         self.assertFalse(filter.exists('bar'))
 
         filter.insert('bar')
 
         self.assertTrue(filter.exists('bar'))
-        self.assertGreater(filter.false_positive_rate, 0)
+        self.assertGreater(filter.false_positive_rate(), 0)
 
     def test_exists_or_insert(self):
         filter = pybloomer.BloomFilter(