diff --git a/spacy/tokens/doc.pyx b/spacy/tokens/doc.pyx
index daab22434..07f1f3336 100644
--- a/spacy/tokens/doc.pyx
+++ b/spacy/tokens/doc.pyx
@@ -305,7 +305,7 @@ cdef class Doc:
                         break
                 else:
                     return 1.0
- 
+
         if self.vector_norm == 0 or other.vector_norm == 0:
             return 0.0
         return numpy.dot(self.vector, other.vector) / (self.vector_norm * other.vector_norm)