diff --git a/models/error.go b/models/error.go
index b3e90ee..6733b2a 100644
--- a/models/error.go
+++ b/models/error.go
@@ -4,7 +4,7 @@ import "fmt"
 
 // ErrUsernameExists represents a "UsernameAlreadyExists" kind of error.
 type ErrUsernameExists struct {
-	UserID int64
+	UserID   int64
 	Username string
 }
 
@@ -16,4 +16,4 @@ func IsErrUsernameExists(err error) bool {
 
 func (err ErrUsernameExists) Error() string {
 	return fmt.Sprintf("a user with this username does already exist [user id: %d, username: %s]", err.UserID, err.Username)
-}
\ No newline at end of file
+}