diff --git a/xtas/tests/test_corenlp.py b/xtas/tests/test_corenlp.py
index 1f69342..a1864a6 100644
--- a/xtas/tests/test_corenlp.py
+++ b/xtas/tests/test_corenlp.py
@@ -61,7 +61,7 @@ def test_lemmatize_unicode():
                   annotators=['tokenize', 'ssplit', 'pos', 'lemma'])
     saf = stanford_to_saf(lines)
     assert_equal({t['lemma'] for t in saf['tokens']},
-                 {'Cesar', 'hit', 'Hovik'})
+                 {'Cesar', 'hit', 'Hovik'}) #
 
 
 def test_ner():
@@ -92,7 +92,7 @@ def test_parse():
     assert_equal(corefs, {tuple(sorted(['John', 'himself']))})
 
 
-def test_multiple_sentences():
+def test_multiple_sentences(): #
     _check_corenlp()
     p = parse("John lives in Amsterdam. He works in London")
     saf = stanford_to_saf(p)
diff --git a/xtas/tests/test_es.py b/xtas/tests/test_es.py
index 309b03e..2abbae0 100644
--- a/xtas/tests/test_es.py
+++ b/xtas/tests/test_es.py
@@ -86,7 +86,7 @@ def test_query_batch():
         assert_equal(set(b), {"test", "test2"})
 
 
-def test_store_get_result():
+def test_store_get_result(): #
     "test whether results can be stored and retrieved"
     from xtas.tasks.es import (
         store_single,
diff --git a/xtas/tests/test_frog.py b/xtas/tests/test_frog.py
index 7968ffc..7169236 100644
--- a/xtas/tests/test_frog.py
+++ b/xtas/tests/test_frog.py
@@ -94,4 +94,4 @@ def test_frog_task():
     assert_equal(tokens[0]['lemma'], 'dit')
     saf = frog("dit is een test", output='saf')
     assert_equal(len(saf['tokens']), 4)
-    assert_equal(saf['header']['processed'][0]['module'], 'frog')
+    assert_equal(saf['header']['processed'][0]['module'], 'frog') #
diff --git a/xtas/tests/test_pipeline.py b/xtas/tests/test_pipeline.py
index e2dc6c6..7af2371 100644
--- a/xtas/tests/test_pipeline.py
+++ b/xtas/tests/test_pipeline.py
@@ -44,7 +44,7 @@ def test_pipeline():
     s = "cats are furry"
     expected = [('cats', 'NNS'), ('are', 'VBP'), ('furry', 'JJ')]
     result = pos_tag(tokenize(s), 'nltk')
-    assert_equal(result, expected)
+    assert_equal(result, expected) #
     with eager_celery():
         # do we get correct result from pipeline?
         r = pipeline(s, [{"module": tokenize},