diff --git a/gensim/models/ldamodel.py b/gensim/models/ldamodel.py
index 8e0eee4ef9..30ca93f1b2 100755
--- a/gensim/models/ldamodel.py
+++ b/gensim/models/ldamodel.py
@@ -912,7 +912,7 @@ def get_document_topics(self, bow, minimum_probability=None, minimum_phi_value=N
             )
             return self._apply(corpus, **kwargs)
 
-        gamma, phis = self.inference([bow], collect_sstats=True)
+        gamma, phis = self.inference([bow], collect_sstats=per_word_topics)
         topic_dist = gamma[0] / sum(gamma[0])  # normalize distribution
 
         document_topics = [(topicid, topicvalue) for topicid, topicvalue in enumerate(topic_dist)