diff --git a/gensim/corpora/dictionary.py b/gensim/corpora/dictionary.py
index 229d28d2c9..2ba296b115 100644
--- a/gensim/corpora/dictionary.py
+++ b/gensim/corpora/dictionary.py
@@ -472,6 +472,7 @@ def compactify(self):
         self.token2id = {token: idmap[tokenid] for token, tokenid in iteritems(self.token2id)}
         self.id2token = {}
         self.dfs = {idmap[tokenid]: freq for tokenid, freq in iteritems(self.dfs)}
+        self.cfs = {idmap[tokenid]: freq for tokenid, freq in iteritems(self.cfs)}
 
     def save_as_text(self, fname, sort_by_word=True):
         """Save :class:`~gensim.corpora.dictionary.Dictionary` to a text file.
diff --git a/gensim/test/test_corpora_dictionary.py b/gensim/test/test_corpora_dictionary.py
index cca9993952..29338ad45e 100644
--- a/gensim/test/test_corpora_dictionary.py
+++ b/gensim/test/test_corpora_dictionary.py
@@ -124,8 +124,10 @@ def testMerge(self):
     def testFilter(self):
         d = Dictionary(self.texts)
         d.filter_extremes(no_below=2, no_above=1.0, keep_n=4)
-        expected = {0: 3, 1: 3, 2: 3, 3: 3}
-        self.assertEqual(d.dfs, expected)
+        dfs_expected = {0: 3, 1: 3, 2: 3, 3: 3}
+        cfs_expected = {0: 4, 1: 3, 2: 3, 3: 3}
+        self.assertEqual(d.dfs, dfs_expected)
+        self.assertEqual(d.cfs, cfs_expected)
 
     def testFilterKeepTokens_keepTokens(self):
         # provide keep_tokens argument, keep the tokens given