1 files changed, 2 insertions, 2 deletions
diff --git a/php/upload.php b/php/upload.php
index 6ee85ad..9b58ba4 100644
--- a/php/upload.php
+++ b/php/upload.php
@@ -42,10 +42,10 @@ function generateName($file)
                 500); // HTTP status code "500 Internal Server Error"
         }
 
-        $chars = range('a', 'z');
+        $chars = ID_CHARSET; 
         $name = '';
         for ($i = 0; $i < $length; ++$i) {
-            $name .= $chars[array_rand($chars)];
+            $name .= $chars[mt_rand(0, strlen($chars))]; 
         }
 
         // Add the extension to the file name