diff --git a/CHANGELOG b/CHANGELOG
index 14d72e3d4..6a256c77d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -15,7 +15,7 @@ Changes between 2.0.0 and 2.0.1.devX
   with python3 (now that nose-1.0 supports python3)
 - remove somewhat surprising "same-conftest" detection because
   it ignores conftest.py when they appear in several subdirs.
-- improve assertions ("not in"), thanks Floris
+- improve assertions ("not in"), thanks Floris Bruynooghe
 - improve behaviour/warnings when running on top of "python -OO"
   (assertions and docstrings are turned off, leading to potential
   false positives)
diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index 484b439ec..c7187372e 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -116,8 +116,7 @@ class TestAssert_reprcompare:
 
 def test_reprcompare_notin():
     detail = plugin.pytest_assertrepr_compare('not in', 'foo', 'aaafoobbb')[1:]
-    assert '- aaabbb' in detail
-    assert '+ aaafoobbb' in detail
+    assert detail == ["'foo' is contained here:", '  aaafoobbb', '?    +++']
 
 @needsnewassert
 def test_pytest_assertrepr_compare_integration(testdir):