diff --git a/examples/client.go b/examples/client.go
index 71e7915..5ef9db6 100644
--- a/examples/client.go
+++ b/examples/client.go
@@ -109,16 +109,20 @@ func trustCertificate(cert *x509.Certificate) trust {
 
 func main() {
 	if len(os.Args) < 2 {
-		fmt.Printf("usage: %s gemini://...", os.Args[0])
+		fmt.Printf("usage: %s gemini://... [host]", os.Args[0])
 		os.Exit(1)
 	}
 
 	url := os.Args[1]
 	req, err := gemini.NewRequest(url)
+
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
+	if len(os.Args) == 3 {
+		req.Host = os.Args[2]
+	}
 
 	if err := doRequest(req); err != nil {
 		fmt.Println(err)
diff --git a/server.go b/server.go
index 5d2f724..465a8a4 100644
--- a/server.go
+++ b/server.go
@@ -42,7 +42,7 @@ type responderKey struct {
 // If no scheme is specified, a default scheme of gemini:// is assumed.
 //
 // Wildcard patterns are supported (e.g. *.example.com).
-// To register a certificate for a wildcard domain, call Certificates.Add:
+// To register a certificate for a wildcard hostname, call Certificates.Add:
 //
 //     var s gemini.Server
 //     s.Certificates.Add("*.example.com", cert)