diff --git a/spacy/en/attrs.pyx b/spacy/en/attrs.pyx
index 0ff7c43ed..2d2c76726 100644
--- a/spacy/en/attrs.pyx
+++ b/spacy/en/attrs.pyx
@@ -1,3 +1,4 @@
+# cython: embedsignature=True
 from .. import orth
 from ..typedefs cimport flags_t