diff --git a/layouts/partials/css.html b/layouts/partials/css.html
index 20bde08e5f..119210201d 100644
--- a/layouts/partials/css.html
+++ b/layouts/partials/css.html
@@ -36,7 +36,7 @@
{{- if .Params.case_study_styles }}
{{ $cssOutput := "css/case-studies.css" }}
- {{ $caseStudiesCSS := resources.Get "scss/_case-studies.scss" | resources.ToCSS }}
+ {{ $caseStudiesCSS := resources.Get "scss/_case-studies.scss" | css.Sass }}
{{ if $inServerMode }}
{{ else }}