diff --git a/spacy/tokens.pyx b/spacy/tokens.pyx
index f2b0c0149..f5683780e 100644
--- a/spacy/tokens.pyx
+++ b/spacy/tokens.pyx
@@ -338,6 +338,7 @@ cdef class Token:
             while ptr != self.c:
                 if ptr + ptr.head == self.c:
                     n += 1
+                ptr += 1
             return n
 
     property n_rights: