diff --git a/src/Archive/Redirect.coffee b/src/Archive/Redirect.coffee
index 82b8bb296..4d77be1a8 100644
--- a/src/Archive/Redirect.coffee
+++ b/src/Archive/Redirect.coffee
@@ -126,6 +126,7 @@ Redirect =
     url
 
   file: (archive, {boardID, filename}) ->
+    filename = encodeURIComponent Build.unescape decodeURIComponent filename if boardID is 'f'
     "#{Redirect.protocol archive}#{archive.domain}/#{boardID}/full_image/#{filename}"
 
   board: (archive, {boardID}) ->