diff --git a/doc.go b/doc.go
index e20f8a44..f3555e43 100644
--- a/doc.go
+++ b/doc.go
@@ -101,7 +101,7 @@ uses public key cryptography to sign resource records. The
 public keys are stored in DNSKEY records and the signatures in RRSIG records.
 
 Requesting DNSSEC information for a zone is done by adding the DO (DNSSEC OK) bit
-to an request.
+to a request.
 
      m := new(dns.Msg)
      m.SetEdns0(4096, true)