diff --git a/greetings.go b/greetings.go
index 301c851..575448d 100644
--- a/greetings.go
+++ b/greetings.go
@@ -6,7 +6,7 @@ import (
 )
 
 // Hello returns a greeting for the named person.
-func Hello(name string) string {
+func Hello(name string) (string, error) {
     // If no name was given, return an error with a message.
     if name == "" {
         return "", errors.New("empty name")