diff --git a/gensim/models/word2vec.py b/gensim/models/word2vec.py
index d591c21307..a2c27afd09 100644
--- a/gensim/models/word2vec.py
+++ b/gensim/models/word2vec.py
@@ -1210,7 +1210,7 @@ def most_similar(self, positive=[], negative=[], topn=10, restrict_vocab=None, i
         return self.kv.most_similar(positive, negative, topn, restrict_vocab, indexer)
 
     def wmdistance(self, document1, document2):
-        return self.kv.wmdistance(document1. document2)
+        return self.kv.wmdistance(document1, document2)
 
     def most_similar_cosmul(self, positive=[], negative=[], topn=10):
         return self.kv.most_similar_cosmul(positive, negative, topn)