diff --git a/libraries/base/Control/Concurrent.hs b/libraries/base/Control/Concurrent.hs
index eaf1e6621f5bd78325465be6193227d7c602a3b4..c12fef54b02e91fe8417e7daa3c210a84895b489 100644
--- a/libraries/base/Control/Concurrent.hs
+++ b/libraries/base/Control/Concurrent.hs
@@ -104,8 +104,6 @@ module Control.Concurrent (
 
     ) where
 
-import Prelude
-
 import Control.Exception.Base as Exception
 
 import GHC.Exception
diff --git a/libraries/base/Control/Concurrent/Chan.hs b/libraries/base/Control/Concurrent/Chan.hs
index e0b7b54c23452a9d82088b30460629b237841dde..487187503d07e8c5dee1899849111d46a894d8b4 100644
--- a/libraries/base/Control/Concurrent/Chan.hs
+++ b/libraries/base/Control/Concurrent/Chan.hs
@@ -34,8 +34,6 @@ module Control.Concurrent.Chan
         writeList2Chan,
    ) where
 
-import Prelude
-
 import System.IO.Unsafe         ( unsafeInterleaveIO )
 import Control.Concurrent.MVar
 import Control.Exception (mask_)
diff --git a/libraries/base/Control/Monad/Instances.hs b/libraries/base/Control/Monad/Instances.hs
index 687d33c4b8a744dc2b872221b070010519c20142..7a4fdbefcdb7f76fc47b002075a297d373053e06 100644
--- a/libraries/base/Control/Monad/Instances.hs
+++ b/libraries/base/Control/Monad/Instances.hs
@@ -17,5 +17,3 @@
 
 module Control.Monad.Instances {-# DEPRECATED "This module now contains no instances and will be removed in the future" #-} -- deprecated in 7.8
     (Functor(..),Monad(..)) where
-
-import Prelude
diff --git a/libraries/base/Control/Monad/ST/Lazy/Imp.hs b/libraries/base/Control/Monad/ST/Lazy/Imp.hs
index 3fdd541047914cc22d4d5c51bdfddcdfc95e94c4..80c9fa5af380ab2957bfb3dc45a98027c3230679 100644
--- a/libraries/base/Control/Monad/ST/Lazy/Imp.hs
+++ b/libraries/base/Control/Monad/ST/Lazy/Imp.hs
@@ -36,8 +36,6 @@ module Control.Monad.ST.Lazy.Imp (
         unsafeIOToST
     ) where
 
-import Prelude
-
 import Control.Monad.Fix
 
 import qualified Control.Monad.ST.Safe as ST
diff --git a/libraries/base/Control/Monad/Zip.hs b/libraries/base/Control/Monad/Zip.hs
index ec13eedf233738618d1daa92f871c229be1f6064..197951e6e96b9a9eb5d4ad9e95c9856c8292785d 100644
--- a/libraries/base/Control/Monad/Zip.hs
+++ b/libraries/base/Control/Monad/Zip.hs
@@ -17,7 +17,6 @@
 
 module Control.Monad.Zip where
 
-import Prelude
 import Control.Monad (liftM)
 
 -- | `MonadZip` type class. Minimal definition: `mzip` or `mzipWith`
diff --git a/libraries/base/Data/Complex.hs b/libraries/base/Data/Complex.hs
index 0ce148788d563a612a1668441b22c815962da8bd..2baa60bd3653f500eb48847ac85feaf47c19575c 100644
--- a/libraries/base/Data/Complex.hs
+++ b/libraries/base/Data/Complex.hs
@@ -34,8 +34,6 @@ module Data.Complex
 
         )  where
 
-import Prelude
-
 import Data.Typeable
 import Data.Data (Data)
 
diff --git a/libraries/base/Data/Fixed.hs b/libraries/base/Data/Fixed.hs
index 8e8ea60ebee6d1930ba0ef9916a35fbced01a49e..b499617f32a7308855664e7442474427da452607 100644
--- a/libraries/base/Data/Fixed.hs
+++ b/libraries/base/Data/Fixed.hs
@@ -37,7 +37,6 @@ module Data.Fixed
     E12,Pico
 ) where
 
-import Prelude -- necessary to get dependencies right
 import Data.Typeable
 import Data.Data
 import GHC.Read
diff --git a/libraries/base/Data/Ix.hs b/libraries/base/Data/Ix.hs
index d3be1c4759fee8885f9fd1ff810247c1db6ef414..e7e1f34beea57bc807ed36ab8a74c81b6ed37227 100644
--- a/libraries/base/Data/Ix.hs
+++ b/libraries/base/Data/Ix.hs
@@ -61,6 +61,4 @@ module Data.Ix
 
     ) where
 
--- import Prelude
-
 import GHC.Arr
diff --git a/libraries/base/Data/Ratio.hs b/libraries/base/Data/Ratio.hs
index 6a16e9a260bbb15845c26c67cdda4385ae3dcd27..8517e485ff2e8bc4d3acad9a47f9337fc54db549 100644
--- a/libraries/base/Data/Ratio.hs
+++ b/libraries/base/Data/Ratio.hs
@@ -24,8 +24,6 @@ module Data.Ratio
 
   ) where
 
-import Prelude
-
 import GHC.Real         -- The basic defns for Ratio
 
 -- -----------------------------------------------------------------------------
diff --git a/libraries/base/Data/STRef.hs b/libraries/base/Data/STRef.hs
index dc65abc7919f981d76e4cc341d78548fa3d0601b..8df34bba9551d7a3de289e1587fdf4bfbc8c284e 100644
--- a/libraries/base/Data/STRef.hs
+++ b/libraries/base/Data/STRef.hs
@@ -24,8 +24,6 @@ module Data.STRef (
         modifySTRef'
  ) where
 
-import Prelude
-
 import GHC.ST
 import GHC.STRef
 
diff --git a/libraries/base/Data/STRef/Lazy.hs b/libraries/base/Data/STRef/Lazy.hs
index 039b03f3b569f1128f3a1bd6cb94ec201f4499f4..5134de446eb6dc0d243e54599e4f9fcd53aca0f3 100644
--- a/libraries/base/Data/STRef/Lazy.hs
+++ b/libraries/base/Data/STRef/Lazy.hs
@@ -25,7 +25,6 @@ module Data.STRef.Lazy (
 
 import Control.Monad.ST.Lazy.Safe
 import qualified Data.STRef as ST
-import Prelude
 
 newSTRef    :: a -> ST s (ST.STRef s a)
 readSTRef   :: ST.STRef s a -> ST s a
diff --git a/libraries/base/Data/Unique.hs b/libraries/base/Data/Unique.hs
index a5c0d6c753ec57328e8f83536c4bc3b3d4926e44..74bac76ad073f3c3bdcac57ae979e227c0ff23be 100644
--- a/libraries/base/Data/Unique.hs
+++ b/libraries/base/Data/Unique.hs
@@ -22,8 +22,6 @@ module Data.Unique (
    hashUnique
  ) where
 
-import Prelude
-
 import System.IO.Unsafe (unsafePerformIO)
 
 import GHC.Base
diff --git a/libraries/base/GHC/Constants.hs b/libraries/base/GHC/Constants.hs
index d8efd7228cc2f026d8ad4527983500f11df7b7aa..c2e01a3e62d5549b47294b67d922ad620a47016e 100644
--- a/libraries/base/GHC/Constants.hs
+++ b/libraries/base/GHC/Constants.hs
@@ -2,8 +2,6 @@
 
 module GHC.Constants where
 
-import Prelude ()
-
 -- TODO: This used to include HaskellConstants.hs, but that has now gone.
 -- We probably want to include the constants in platformConstants somehow
 -- instead.
diff --git a/libraries/base/GHC/Environment.hs b/libraries/base/GHC/Environment.hs
index 257ee27ebf3bee0a59674c97653318c403c42919..39b472913a4e8bd288f06fcaf17a69d4ee578306 100644
--- a/libraries/base/GHC/Environment.hs
+++ b/libraries/base/GHC/Environment.hs
@@ -3,7 +3,6 @@
 
 module GHC.Environment (getFullArgs) where
 
-import Prelude
 import Foreign
 import Foreign.C
 
diff --git a/libraries/base/System/CPUTime.hsc b/libraries/base/System/CPUTime.hsc
index 85634b7473388ac13864180113a4b44e0cc8ebb8..1d2f341d18efc94612bf5bba70a84f2a9621ac3e 100644
--- a/libraries/base/System/CPUTime.hsc
+++ b/libraries/base/System/CPUTime.hsc
@@ -24,8 +24,6 @@ module System.CPUTime
          cpuTimePrecision  -- :: Integer
         ) where
 
-import Prelude
-
 import Data.Ratio
 
 import Foreign.Safe
diff --git a/libraries/base/System/Console/GetOpt.hs b/libraries/base/System/Console/GetOpt.hs
index 5bdb6d11d1309309a8a5e51cb9f862c62a1371e0..fa9f776ad5e13bd6674cd71510102c5c34fb7a94 100644
--- a/libraries/base/System/Console/GetOpt.hs
+++ b/libraries/base/System/Console/GetOpt.hs
@@ -62,8 +62,6 @@ module System.Console.GetOpt (
    -- $example2
 ) where
 
-import Prelude -- necessary to get dependencies right
-
 import Data.List ( isPrefixOf, find )
 
 -- |What to do with options following non-options
diff --git a/libraries/base/System/Environment.hs b/libraries/base/System/Environment.hs
index b238360d2402445bf47ba67cd474f47d6f051ce1..ee91b78d79ec025ac64d3600a2c4684abaa23e8c 100644
--- a/libraries/base/System/Environment.hs
+++ b/libraries/base/System/Environment.hs
@@ -29,8 +29,6 @@ module System.Environment
       getEnvironment,
   ) where
 
-import Prelude
-
 import Foreign.Safe
 import Foreign.C
 import System.IO.Error (mkIOError)
diff --git a/libraries/base/System/Exit.hs b/libraries/base/System/Exit.hs
index f2fc4337770b5117178af8f5554ef72dd1a2811f..088a76bd96af8bc27139488a17fc6ba49bde87b5 100644
--- a/libraries/base/System/Exit.hs
+++ b/libraries/base/System/Exit.hs
@@ -23,7 +23,6 @@ module System.Exit
     , die
   ) where
 
-import Prelude
 import System.IO
 
 import GHC.IO
diff --git a/libraries/base/System/Info.hs b/libraries/base/System/Info.hs
index 1d251bc37c46e7343ab8ff2d7938f5815d86d72e..1791cdbfe31854df64223ee946179e26747fdb18 100644
--- a/libraries/base/System/Info.hs
+++ b/libraries/base/System/Info.hs
@@ -24,7 +24,6 @@ module System.Info
        compilerVersion
    ) where
 
-import Prelude
 import Data.Version
 
 -- | The version of 'compilerName' with which the program was compiled
diff --git a/libraries/base/System/Mem.hs b/libraries/base/System/Mem.hs
index 3674dcb2243bcccf812f2056b09032ca11aae393..09dfdf9191b71b9ee362236ee2c03582784f9ee3 100644
--- a/libraries/base/System/Mem.hs
+++ b/libraries/base/System/Mem.hs
@@ -19,7 +19,6 @@ module System.Mem
        , performMajorGC
        , performMinorGC
        ) where
-import Prelude
 
 -- | Triggers an immediate garbage collection.
 performGC :: IO ()
diff --git a/libraries/base/System/Mem/StableName.hs b/libraries/base/System/Mem/StableName.hs
index 4f2cab81f8bf59c871a67556565b98b4443a0fc8..f2baaf3e83a07911ee632bad75869aaace83c0a0 100644
--- a/libraries/base/System/Mem/StableName.hs
+++ b/libraries/base/System/Mem/StableName.hs
@@ -38,8 +38,6 @@ module System.Mem.StableName (
   eqStableName
   ) where
 
-import Prelude
-
 import Data.Typeable
 
 import GHC.IO           ( IO(..) )
diff --git a/libraries/base/Text/Printf.hs b/libraries/base/Text/Printf.hs
index a92a1a48abe088b3384b08f3d1a6c31afdaca59b..d20e077b959513925f57f3ac009eaf4590a0a456 100644
--- a/libraries/base/Text/Printf.hs
+++ b/libraries/base/Text/Printf.hs
@@ -91,7 +91,6 @@ module Text.Printf(
   IsChar(..)
 ) where
 
-import Prelude
 import Data.Char
 import Data.Int
 import Data.List
diff --git a/libraries/base/Text/Show/Functions.hs b/libraries/base/Text/Show/Functions.hs
index b34cbc67ce735e1eec695bc409d04fdf99e06632..7d3f110a32627cb840c9ebce914b4baad1833e73 100644
--- a/libraries/base/Text/Show/Functions.hs
+++ b/libraries/base/Text/Show/Functions.hs
@@ -21,8 +21,6 @@
 
 module Text.Show.Functions () where
 
-import Prelude
-
 instance Show (a -> b) where
 	showsPrec _ _ = showString "<function>"