diff --git a/base.php b/base.php
index bae8407..6f3eeaa 100644
--- a/base.php
+++ b/base.php
@@ -197,7 +197,12 @@ function getAcceptLanguages() {
 
     if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
         // break up string into pieces (languages and q factors)
-        preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
+        $accept = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
+        if (preg_match('/^(\w{2})-\w{2}$/', $accept, $matches)) {
+            // Special fix for IE11 which send fr-FR and nothing else
+            $accept = $accept . "," . $matches[1] . ";q=0.8";
+        }
+        preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $accept, $lang_parse);
 
         if (count($lang_parse[1])) {
             $langs = array();
diff --git a/test/baseTest.php b/test/baseTest.php
index 5a8947e..4b46443 100644
--- a/test/baseTest.php
+++ b/test/baseTest.php
@@ -106,7 +106,10 @@ class BaseTest extends PHPUnit_Framework_TestCase
         return array (
             array ("en", "en"),
             array ("fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3", "fr"),
+            array ("fr-FR", "fr"),
             array ("pt,en-us;q=0.7,en;q=0.3", "en"),
+            array ("pt-br,pt;q=0.8,en-us;q=0.5,en;q=0.3", "pt_BR"),
+            array ("pt-pt,pt;q=0.8,en;q=0.5,en-us;q=0.3", "pt_PT"),
             array ("zl", "en"),
         );
     }
@@ -129,8 +132,9 @@ class BaseTest extends PHPUnit_Framework_TestCase
         return array (
             array ("en", "en"),
             array ("en-US", "en_US"),
-            array ("fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3", "fr"),
-            array ("fr-fr,fr;q=0.8,en-us;q=0.5,en;q=0.3", "fr_FR"),
+            array ("fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3", "fr"), // French locale with Firefox
+            array ("fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4", "fr_FR"), // French locale with Chrome
+            array ("fr-FR", "fr_FR"), // French locale with IE11
             array ("pt-br,pt;q=0.8,en-us;q=0.5,en;q=0.3", "pt_BR"),
             array ("zl", "zl"),
         );