diff --git a/draft-ietf-quic-transport.md b/draft-ietf-quic-transport.md
index 89325c9a9a..c1bd0ee7a6 100644
--- a/draft-ietf-quic-transport.md
+++ b/draft-ietf-quic-transport.md
@@ -1818,7 +1818,7 @@ To initiate path validation, an endpoint sends a PATH_CHALLENGE frame containing
 a random payload on the path to be validated.
 
 An endpoint MAY send multiple PATH_CHALLENGE frames to guard against packet
-loss, however an endpoint SHOULD NOT send multiple PATH_CHALLENGE frames in a
+loss. However, an endpoint SHOULD NOT send multiple PATH_CHALLENGE frames in a
 single packet.  An endpoint SHOULD NOT send a PATH_CHALLENGE more frequently
 than it would an Initial packet, ensuring that connection migration is no more
 load on a new path than establishing a new connection.