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-rw-r--r--mod/register.php3
1 files changed, 2 insertions, 1 deletions
diff --git a/mod/register.php b/mod/register.php
index b15ca4fb2..d65c154a8 100644
--- a/mod/register.php
+++ b/mod/register.php
@@ -74,7 +74,8 @@ function register_post(&$a) {
if($r !== false && count($r))
$err .= t(' Your email address is already registered on this system.') ;
- if(! preg_match("/^[a-zA-Z][a-zA-Z0-9\-\_]*$/",$nickname))
+ $nickname = strtolower($nickname);
+ if(! preg_match("/^[a-z][a-z0-9\-\_]*$/",$nickname))
$err .= t(' Nickname <strong>must</strong> start with a letter and contain only letters, numbers, dashes, or underscore.') ;
$r = q("SELECT `uid` FROM `user`
WHERE `nickname` = '%s' LIMIT 1",