diff --git a/tests/utils_tests/test_lazyobject.py b/tests/utils_tests/test_lazyobject.py
index 67b857aa4d..5d1989680a 100644
--- a/tests/utils_tests/test_lazyobject.py
+++ b/tests/utils_tests/test_lazyobject.py
@@ -218,7 +218,7 @@ class SimpleLazyObjectTestCase(LazyObjectTestCase):
         obj = self.lazy_wrap(42)
         # __repr__ contains __repr__ of setup function and does not evaluate
         # the SimpleLazyObject
-        self.assertRegexpMatches(repr(obj), '^<SimpleLazyObject:')
+        six.assertRegex(self, repr(obj), '^<SimpleLazyObject:')
         self.assertIs(obj._wrapped, empty)  # make sure evaluation hasn't been triggered
 
         self.assertEqual(obj, 42)  # evaluate the lazy object