diff --git a/indra/newview/English.lproj/language.txt b/indra/newview/English.lproj/language.txt
index 2c4c454fdd2fd2902cc43a87d26851282de294f1..bc0aa577f97f3c61d479407c5b3b194b5e2a10d7 100644
--- a/indra/newview/English.lproj/language.txt
+++ b/indra/newview/English.lproj/language.txt
@@ -1 +1 @@
-en
\ No newline at end of file
+en-us
\ No newline at end of file