diff --git a/src/teaching/cse-562/2019sp/index.erb b/src/teaching/cse-562/2019sp/index.erb
index c7e44332..9d315173 100644
--- a/src/teaching/cse-562/2019sp/index.erb
+++ b/src/teaching/cse-562/2019sp/index.erb
@@ -18,7 +18,7 @@ schedule:
     type: "Practicum"
     due: ""
     topic: "Checkpoint 0 + JSQLParser"
-    materials: 
+    materials_hidden: 
       slides: "https://odin.cse.buffalo.edu/slides/cse4562sp2019/2019-02-01-Checkpoint0.html"
   - date: "Feb 4"
     type: "Lecture"