diff --git a/bin/parser/train.py b/bin/parser/train.py
index 1f646230b..b63fcdb1f 100755
--- a/bin/parser/train.py
+++ b/bin/parser/train.py
@@ -43,7 +43,7 @@ def score_model(scorer, nlp, raw_text, annot_tuples, train_tags=None):
     if raw_text is None:
         tokens = nlp.tokenizer.tokens_from_list(annot_tuples[1])
     else:
-        tokens = nlp.tokenizer(raw_text, merge_mwes=False)
+        tokens = nlp.tokenizer(raw_text)
     if train_tags is not None:
         key = hash(tokens.string)
         nlp.tagger.tag_from_strings(tokens, train_tags[key])