diff --git a/content/_index.md b/content/_index.md
index a13735f..eb05362 100644
--- a/content/_index.md
+++ b/content/_index.md
@@ -30,7 +30,7 @@ sponsors = [
 
 [[extra.sponsor_tiers]]
 title = "Blue Sponsors & Friends of BMT"
-class = "flex gap-x-4 gap-y-4 flex-wrap justify-center items-center"
+div_class = "flex gap-x-4 gap-y-4 flex-wrap justify-center items-center"
 img_class = "max-w-24 max-h-12"
 sponsors = [
   { alt = "Mustang Math", src = "assets/sponsors/mmt.png", href = "https://mustangmath.com/" },