diff --git a/tools/twine/lib/twine/formatters/android.rb b/tools/twine/lib/twine/formatters/android.rb
index c460beca67..015ea518bf 100644
--- a/tools/twine/lib/twine/formatters/android.rb
+++ b/tools/twine/lib/twine/formatters/android.rb
@@ -12,7 +12,7 @@ module Twine
         'zh' => 'zh-Hans',
         'zh-rCN' => 'zh-Hans',
         'zh-rHK' => 'zh-Hant',
-        'en-rGB' => 'en-UK',
+        'en-rGB' => 'en-GB',
         'in' => 'id'
         # TODO: spanish
       ]