diff --git a/pandas/tests/io/data/legacy_msgpack/0.19.2/0.19.2_x86_64_darwin_2.7.12.msgpack b/pandas/tests/io/data/legacy_msgpack/0.19.2/0.19.2_x86_64_darwin_2.7.12.msgpack
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diff --git a/pandas/tests/io/data/legacy_msgpack/0.19.2/0.19.2_x86_64_darwin_3.6.1.msgpack b/pandas/tests/io/data/legacy_msgpack/0.19.2/0.19.2_x86_64_darwin_3.6.1.msgpack
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diff --git a/pandas/tests/io/data/legacy_pickle/0.19.2/0.19.2_x86_64_darwin_2.7.12.pickle b/pandas/tests/io/data/legacy_pickle/0.19.2/0.19.2_x86_64_darwin_2.7.12.pickle
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diff --git a/pandas/tests/io/data/legacy_pickle/0.19.2/0.19.2_x86_64_darwin_3.6.1.pickle b/pandas/tests/io/data/legacy_pickle/0.19.2/0.19.2_x86_64_darwin_3.6.1.pickle
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diff --git a/pandas/tests/io/test_pickle.py b/pandas/tests/io/test_pickle.py
index fad6237d851fb..f46f62e781006 100644
--- a/pandas/tests/io/test_pickle.py
+++ b/pandas/tests/io/test_pickle.py
@@ -207,7 +207,8 @@ def test_pickles(current_pickle_data, version):
         if data is None:
             continue
         n += 1
-    assert n > 0, 'Pickle files are not tested'
+    assert n > 0, ('Pickle files are not '
+                   'tested: {version}'.format(version=version))
 
 
 def test_round_trip_current(current_pickle_data):