diff --git a/src/Tahoe/Download.hs b/src/Tahoe/Download.hs
index c5a64c489b48c40d25d91389e5b2c3666159e471..795ebd4c5ad37b72e72e60ea76cb57893e1edf02 100644
--- a/src/Tahoe/Download.hs
+++ b/src/Tahoe/Download.hs
@@ -6,6 +6,7 @@
 module Tahoe.Download (
     LookupServer,
     DownloadError (..),
+    DirectoryDownloadError (..),
     LookupError (..),
     DiscoverError (..),
     discoverShares,