diff --git a/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css b/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
index fe497d8776..02adfe7e44 100644
--- a/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
+++ b/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
@@ -20,7 +20,8 @@ body.rtl {
 	font-family: Tahoma, "Times New Roman", "Bitstream Charter", Times, serif;
 }
 
-body.locale-he-il {
+body.locale-he-il,
+body.locale-vi {
 	font-family: Arial, "Times New Roman", "Bitstream Charter", Times, serif;
 }