diff --git a/libraries/base/GHC/Conc/Sync.hs b/libraries/base/GHC/Conc/Sync.hs
index 0c0f26b8bdf0a4dca08b58a0ef7226c54b93cf26..eb70a5e71ec5a3ba0763f557c33c340666111258 100644
--- a/libraries/base/GHC/Conc/Sync.hs
+++ b/libraries/base/GHC/Conc/Sync.hs
@@ -98,10 +98,6 @@ module GHC.Conc.Sync
 import Foreign
 import Foreign.C
 
-#ifdef mingw32_HOST_OS
-import Data.Typeable
-#endif
-
 #ifndef mingw32_HOST_OS
 import Data.Dynamic
 #else