diff --git a/common.go b/common.go
index 1861efc..7d686fd 100644
--- a/common.go
+++ b/common.go
@@ -725,7 +725,7 @@ type Config struct {
 
 	// mutex protects sessionTicketKeys and autoSessionTicketKeys.
 	mutex sync.RWMutex
-	// sessionTicketKeys contains zero or more ticket keys. If set, it means the
+	// sessionTicketKeys contains zero or more ticket keys. If set, it means
 	// the keys were set with SessionTicketKey or SetSessionTicketKeys. The
 	// first key is used for new tickets and any subsequent keys can be used to
 	// decrypt old tickets. The slice contents are not protected by the mutex