diff --git a/install.php b/install.php
index 20b888e6..0e049d82 100644
--- a/install.php
+++ b/install.php
@@ -165,7 +165,7 @@ function install($adminPassword, $email)
         'description'=>'',
         'footer'=>'Footer text - ©2015',
         'language'=>'english',
-        'locale'=>'en_EN',
+        'locale'=>'en_US',
         'timezone'=>'UTC',
         'theme'=>'pure',
         'adminTheme'=>'default',
diff --git a/languages/en_EN.json b/languages/en_US.json
similarity index 100%
rename from languages/en_EN.json
rename to languages/en_US.json