diff --git a/includes/locale.php b/includes/locale.php
index 1e4fac76..1fee1c05 100755
--- a/includes/locale.php
+++ b/includes/locale.php
@@ -47,8 +47,8 @@ if (empty($_SESSION['locale']) && strlen($_SERVER['HTTP_ACCEPT_LANGUAGE']) >= 2)
     case "fi":
         $locale = "fi_FI.UTF-8";
         break;
-    case "si":
-        $locale = "si_LK.UTF-8";
+    case "pl":
+        $locale = "pl_PL.UTF-8";
         break;
     case "tr":
         $locale = "tr_TR.UTF-8";
diff --git a/includes/system.php b/includes/system.php
index 85b418c5..514d6eac 100755
--- a/includes/system.php
+++ b/includes/system.php
@@ -121,7 +121,7 @@ function DisplaySystem()
         'ru_RU.UTF-8' => 'Русский',
         'es_MX.UTF-8' => 'Español',
         'fi_FI.UTF-8' => 'Finnish',
-        'si_LK.UTF-8' => 'Sinhala',
+        'pl_PL.UTF-8' => 'Polish',
         'tr_TR.UTF-8' => 'Türkçe',
         'el_GR.UTF-8' => 'Ελληνικά'
     );