diff --git a/spacy/strings.pyx b/spacy/strings.pyx
index f6b922424..b9264b915 100644
--- a/spacy/strings.pyx
+++ b/spacy/strings.pyx
@@ -96,6 +96,7 @@ cdef class StringStore:
         cdef bytes byte_string
         cdef unicode py_string
         cdef const Utf8Str* utf8str
+
         cdef int id_
         if isinstance(string_or_id, int) or isinstance(string_or_id, long):
             if string_or_id == 0: