diff --git a/01.curriculum/01.physics-chemistry-biology/topics.en.md b/01.curriculum/01.physics-chemistry-biology/topics.en.md
index 77764115f..a6c4be147 100644
--- a/01.curriculum/01.physics-chemistry-biology/topics.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/topics.en.md
@@ -1,5 +1,5 @@
 ---
-title: master
-slug: master
+title: plain-level
+slug: plain-level
 ---
-courses at master level. Must stay hidden
+