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-rw-r--r--application/controllers/user.php4
1 files changed, 2 insertions, 2 deletions
diff --git a/application/controllers/user.php b/application/controllers/user.php
index 67c3ccbb7..06ecc50dd 100644
--- a/application/controllers/user.php
+++ b/application/controllers/user.php
@@ -137,8 +137,8 @@ class User extends CI_Controller {
$password = $this->input->post("password");
$password_confirm = $this->input->post("password_confirm");
- if (!$username) {
- $error[]= "Invalid username.";
+ if (!$username || !preg_match("/^[a-z0-9]+$/", $username)) {
+ $error[]= "Invalid username (only a-z0-9 are allowed).";
}
$this->load->helper("email");