diff --git a/src/python/magnum/test/test.py b/src/python/magnum/test/test.py
index 0af0f8e..966afe6 100644
--- a/src/python/magnum/test/test.py
+++ b/src/python/magnum/test/test.py
@@ -261,4 +261,4 @@ class ImageView(unittest.TestCase):
             b'rgbRGB  '))
         self.assertIs(a.owner, data2)
         self.assertEqual(sys.getrefcount(data), data_refcount)
-        self.assertEqual(sys.getrefcount(data2), data_refcount + 1)
+        self.assertEqual(sys.getrefcount(data2), data2_refcount + 1)