diff --git a/10.brainstorming-innovative-courses/entropy/n1/10.enumeration/10.main/textbook.en.md b/10.brainstorming-innovative-courses/entropy/n1/10.enumeration/10.main/textbook.en.md
index 20ad58a7c..d72984486 100644
--- a/10.brainstorming-innovative-courses/entropy/n1/10.enumeration/10.main/textbook.en.md
+++ b/10.brainstorming-innovative-courses/entropy/n1/10.enumeration/10.main/textbook.en.md
@@ -9,4 +9,4 @@ lessons:
 ---
 
 
-Enumeration : main EN
\ No newline at end of file
+##### Enumeration : main EN, level 1
\ No newline at end of file