diff --git a/Assistant/ThreadedMonad.hs b/Assistant/ThreadedMonad.hs
index 16f3a9dd9f..f32adff435 100644
--- a/Assistant/ThreadedMonad.hs
+++ b/Assistant/ThreadedMonad.hs
@@ -13,6 +13,7 @@ import qualified Annex
 import Control.Concurrent
 import Data.Tuple
 import System.Posix.Types
+import System.Posix.Process
 
 {- The Annex state is stored in a MVar, so that threaded actions can access
  - it. -}
diff --git a/Assistant/Threads/TransferWatcher.hs b/Assistant/Threads/TransferWatcher.hs
index 5be63fce4f..766c1f89e8 100644
--- a/Assistant/Threads/TransferWatcher.hs
+++ b/Assistant/Threads/TransferWatcher.hs
@@ -17,6 +17,7 @@ import Utility.Types.DirWatcher
 import Annex.BranchState
 
 import Data.Map as M
+import System.Posix.Process
 
 {- This thread watches for changes to the gitAnnexTransferDir,
  - and updates the DaemonStatus's map of ongoing transfers. -}
diff --git a/Utility/Parallel.hs b/Utility/Parallel.hs
index 9df95ab2b0..f4a79316c7 100644
--- a/Utility/Parallel.hs
+++ b/Utility/Parallel.hs
@@ -9,6 +9,8 @@ module Utility.Parallel where
 
 import Common
 
+import System.Posix.Process
+
 {- Runs an action in parallel with a set of values.
  - Returns the values partitioned into ones with which the action succeeded,
  - and ones with which it failed. -}