diff --git a/user.go b/user.go
index b3a7e4b..cdc8a85 100644
--- a/user.go
+++ b/user.go
@@ -1,7 +1,5 @@
 package discordgo
 
-import "fmt"
-
 // A User stores all data for an individual Discord user.
 type User struct {
 	ID            string `json:"id"`
@@ -17,10 +15,10 @@ type User struct {
 
 // String returns a unique identifier of the form username#discriminator
 func (u *User) String() string {
-	return fmt.Sprintf("%s#%s", u.Username, u.Discriminator)
+	return u.Username + "#" + u.Discriminator
 }
 
 // Mention return a string which mentions the user
 func (u *User) Mention() string {
-	return fmt.Sprintf("<@%s>", u.ID)
+	return "<@" + u.ID + ">"
 }