diff --git a/Database/Queue.hs b/Database/Queue.hs
index 99fbacb9b6..c4186b8c80 100644
--- a/Database/Queue.hs
+++ b/Database/Queue.hs
@@ -24,6 +24,8 @@ import Database.Handle
 import Database.Persist.Sqlite
 import Control.Concurrent
 import Data.Time.Clock
+import Control.Applicative
+import Prelude
 
 {- A DbQueue wraps a DbHandle, adding a queue of writes to perform.
  -