diff --git a/lib/MetaCPAN/Web/Controller/Source.pm b/lib/MetaCPAN/Web/Controller/Source.pm
index 719ab7fc8c..e1a99c5ea3 100644
--- a/lib/MetaCPAN/Web/Controller/Source.pm
+++ b/lib/MetaCPAN/Web/Controller/Source.pm
@@ -93,7 +93,7 @@ sub detect_filetype {
         # No separate pod brush as of 2011-08-04.
         return 'perl' if /\. ( p[ml] | psgi | pod ) $/ix;
 
-        return 'perl' if /^ cpanfile $/ix;
+        return 'perl' if /^ (cpan|alien)file $/ix;
 
         return 'yaml' if /\. ya?ml $/ix;