diff --git a/modules/quality-control/_posts/2024-09-03-quality-control.md b/modules/quality-control/_posts/2024-09-03-quality-control.md
index a2ed5ce..33b7ba3 100644
--- a/modules/quality-control/_posts/2024-09-03-quality-control.md
+++ b/modules/quality-control/_posts/2024-09-03-quality-control.md
@@ -2,4 +2,4 @@
 title: Introduction to Quality Control (raw reads)
 ---
 
-{% pptx "/slides/Quality-Trimming.pptx" height=600px %}
+{% pdf "/slides/Quality-Trimming.pdf" height=600px %}