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-rw-r--r--system/core/Lang.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/core/Lang.php b/system/core/Lang.php
index c0cd34a3d..9aaf944ce 100644
--- a/system/core/Lang.php
+++ b/system/core/Lang.php
@@ -106,7 +106,7 @@ class CI_Lang {
$langfile .= '.php';
- if (empty($idiom) OR ! ctype_alpha($idiom))
+ if (empty($idiom) OR ! preg_match('/^[a-z_-]$/i', $idiom))
{
$config =& get_config();
$idiom = empty($config['language']) ? 'english' : $config['language'];