diff --git a/gensim/corpora/indexedcorpus.py b/gensim/corpora/indexedcorpus.py
index dd3f703899..ce2d2332a3 100644
--- a/gensim/corpora/indexedcorpus.py
+++ b/gensim/corpora/indexedcorpus.py
@@ -69,6 +69,7 @@ def serialize(serializer, fname, corpus, id2word=None, index_fname=None, progres
            each saved document,
         * the `docbyoffset(offset)` method, which returns a document
           positioned at `offset` bytes within the persistent storage (file).
+        * metadata if set to true will ensure that serialize will write out article titles to a pickle file.
 
         Example:
 
diff --git a/gensim/corpora/wikicorpus.py b/gensim/corpora/wikicorpus.py
index 1a53b282e9..8ded391769 100755
--- a/gensim/corpora/wikicorpus.py
+++ b/gensim/corpora/wikicorpus.py
@@ -266,6 +266,7 @@ def __init__(self, fname, processes=None, lemmatize=utils.has_pattern(), diction
         If `pattern` package is installed, use fancier shallow parsing to get
         token lemmas. Otherwise, use simple regexp tokenization. You can override
         this automatic logic by forcing the `lemmatize` parameter explicitly.
+        self.metadata if set to true will ensure that serialize will write out article titles to a pickle file.
 
         """
         self.fname = fname