diff --git a/layouts/partials/resources/page_css.html b/layouts/partials/resources/page_css.html
index 6bbd568..90adbea 100644
--- a/layouts/partials/resources/page_css.html
+++ b/layouts/partials/resources/page_css.html
@@ -15,10 +15,22 @@
 {{ range $stylesheets }}
   {{ $processedStylesheets = $processedStylesheets | append (. | resources.ExecuteAsTemplate .Name .) }}
 {{ end }}
+
 {{ if hugo.IsProduction }}
-  {{ $processedStylesheets = slice ($processedStylesheets
-                           | resources.Concat (printf "%s/page.css" $.File.Dir)
-                           | fingerprint "md5") }}
+  {{/*
+    Replace the list of stylesheets that helps with debugging with a
+    concatenated and fingerprinted version.
+  */}}
+  {{ if gt (len $processedStylesheets) 0 }}
+    {{ with $file := $.File }}
+      {{ $outputFilename := printf "%s/page.css" $.File.Dir }}
+      {{ $processedStylesheets = slice ($processedStylesheets
+                              | resources.Concat $outputFilename
+                              | fingerprint "md5") }}
+    {{ else }}
+      {{ warnf "No File for page CSS." }}
+    {{ end }}
+  {{ end }}
 {{ end }}
 
 {{ return $processedStylesheets }}