diff --git a/spacy/tokens/span.pyx b/spacy/tokens/span.pyx
index 159074cd4..49403ccc3 100644
--- a/spacy/tokens/span.pyx
+++ b/spacy/tokens/span.pyx
@@ -7,7 +7,7 @@ import math
 import six
 
 from ..structs cimport TokenC, LexemeC
-from ..typedefs cimport flags_t, attr_t
+from ..typedefs cimport flags_t, attr_t, hash_t
 from ..attrs cimport attr_id_t
 from ..parts_of_speech cimport univ_pos_t
 from ..util import normalize_slice