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-rw-r--r--libraries/base/Control/Concurrent.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/libraries/base/Control/Concurrent.hs b/libraries/base/Control/Concurrent.hs
index 9ab209e5d5..eaf1e6621f 100644
--- a/libraries/base/Control/Concurrent.hs
+++ b/libraries/base/Control/Concurrent.hs
@@ -123,7 +123,7 @@ import Foreign.C.Types
#ifdef mingw32_HOST_OS
import Foreign.C
import System.IO
-import Data.Maybe (Maybe(..))
+import Data.Functor ( void )
#endif
import Control.Concurrent.MVar