diff --git a/spacy/matcher/matcher.pyx b/spacy/matcher/matcher.pyx
index e4283f138..f7720cca2 100644
--- a/spacy/matcher/matcher.pyx
+++ b/spacy/matcher/matcher.pyx
@@ -338,6 +338,7 @@ cdef class Matcher:
         else:
             return key
 
+
 def unpickle_matcher(vocab, patterns, callbacks):
     matcher = Matcher(vocab)
     for key, pattern in patterns.items():