diff --git a/content/day3/05_buildpacks.md b/content/day3/05_buildpacks.md
index c672478..8cded37 100644
--- a/content/day3/05_buildpacks.md
+++ b/content/day3/05_buildpacks.md
@@ -24,11 +24,11 @@ And a very full talk at that.
 
 ```mermaid
 flowchart LR
-    subgraph ii(OCI Image Index)
+    subgraph OCIImageIndex
         lamd(linux/amd64)
-        larm(linux(arm64)
+        larm(linux/arm64)
     end
-    ii->image
+    ii-->image
     subgraph image
         layer1
         layer2
diff --git a/content/day4/_index.md b/content/day4/_index.md
index cd0cff7..c3a3b66 100644
--- a/content/day4/_index.md
+++ b/content/day4/_index.md
@@ -1,6 +1,7 @@
 ---
 archetype: chapter 
 title: Day 4
+weight: 4
 ---
 
 The last day with a limited sponsor expo (10:00-14:30) and a bunch of people on the move (not me)
\ No newline at end of file