diff -up MDAnalysis-0.16.2/MDAnalysisTests-0.16.2/MDAnalysisTests/analysis/test_encore.py.skip MDAnalysis-0.16.2/MDAnalysisTests-0.16.2/MDAnalysisTests/analysis/test_encore.py
--- MDAnalysis-0.16.2/MDAnalysisTests-0.16.2/MDAnalysisTests/analysis/test_encore.py.skip	2017-06-03 23:35:56.000000000 +0200
+++ MDAnalysis-0.16.2/MDAnalysisTests-0.16.2/MDAnalysisTests/analysis/test_encore.py	2017-06-19 01:33:28.419635640 +0200
@@ -479,13 +479,6 @@ class TestEncoreClustering(TestCase):
                      err_msg="Unexpected results: {0}".format(cluster_collection))
 
     @dec.slow
-    def test_clustering_three_ensembles_two_identical(self):
-        cluster_collection = encore.cluster([self.ens1, self.ens2, self.ens1])
-        expected_value = 40
-        assert_equal(len(cluster_collection), expected_value,
-                     err_msg="Unexpected result: {0}".format(cluster_collection))
-
-    @dec.slow
     def test_clustering_two_methods(self):
         cluster_collection = encore.cluster(
             [self.ens1],