diff --git a/best_practices/i18n.rst b/best_practices/i18n.rst
index 1e7a86f3196..9da3fad3271 100644
--- a/best_practices/i18n.rst
+++ b/best_practices/i18n.rst
@@ -83,7 +83,7 @@ English in the application would be:
     <!-- app/Resources/translations/messages.en.xliff -->
     <?xml version="1.0"?>
     <xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2">
-        <file source-language="en" target-language="en" datatype="plaintext">
+        <file source-language="en" target-language="en" datatype="plaintext" original="file.ext">
             <body>
                 <trans-unit id="1">
                     <source>title.post_list</source>
