diff --git a/test/d/textbook.en.md b/test/d/textbook.en.md
index 85a0caf1a..0d9a8247f 100644
--- a/test/d/textbook.en.md
+++ b/test/d/textbook.en.md
@@ -8,4 +8,4 @@ lessons:
       order: 3
 ---
 
-## TEST B
+## TEST B en