diff --git a/spacy/language.py b/spacy/language.py
index 29a844c13..36a56413a 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -284,7 +284,7 @@ class Language(object):
                 n_threads=n_threads, batch_size=batch_size)
         if self.entity and entity:
             stream = self.entity.pipe(stream,
-                n_threads=n_threads, batch_size=batch_size)
+                n_threads=1, batch_size=batch_size)
         for doc in stream:
             yield doc