Index: openacs-4/packages/file-storage/www/folder-chunk.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/file-storage/www/folder-chunk.tcl,v
diff -u -N -r1.61.2.5 -r1.61.2.6
--- openacs-4/packages/file-storage/www/folder-chunk.tcl	1 Jul 2019 14:47:07 -0000	1.61.2.5
+++ openacs-4/packages/file-storage/www/folder-chunk.tcl	21 Jul 2020 14:06:40 -0000	1.61.2.6
@@ -433,7 +433,7 @@
             set alt_icon "#file-storage.file#"
             set download_link [_ file-storage.Download]
             if {$like_filesystem_p} {
-                set download_url /file/$object_id/[ad_urlencode_path $title][file extension $name]
+                set download_url /file/$object_id/[ad_urlencode_path $title][ad_file extension $name]
                 set file_url [export_vars -base ${fs_url}download/[ad_urlencode_path $title] {{file_id $object_id}}]
             } else {
                 set download_url /file/$object_id/[ad_urlencode_path $name]